| The Gaudi Framework v32r1 (f65d50dc)

PerfMonAuditor.cpp
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1 #include "GaudiKernel/Auditor.h"
2 #include "GaudiKernel/HashMap.h"
3 #include "GaudiKernel/IIncidentListener.h"
4 #include "GaudiKernel/IIncidentSvc.h"
5 #include "GaudiKernel/IToolSvc.h"
6 #include "GaudiKernel/MsgStream.h"
7 #include "GaudiKernel/VectorMap.h"
8
9 /*BEGIN: perfmon*/
10 #include <cstring>
11 #include <fstream>
12 #include <iostream>
13 #include <map>
14 #include <perfmon/pfmlib.h>
15 #include <perfmon/pfmlib_core.h>
16 #include <perfmon/pfmlib_intel_nhm.h>
17 #include <sstream>
18 #include <string>
19 #include <utility>
20 #include <vector>
21
22 #include <perfmon/perfmon.h>
23 #include <perfmon/perfmon_dfl_smpl.h>
24
26
28
29 #include <errno.h>
30 #include <fcntl.h>
31 #include <getopt.h>
32 #include <signal.h>
33 #include <stdarg.h>
34 #include <stdint.h>
35 #include <stdio.h>
36 #include <stdlib.h>
37 #include <string.h>
38 #include <sys/mman.h>
39 #include <sys/ptrace.h>
40 #include <sys/resource.h>
41 #include <sys/time.h>
42 #include <sys/types.h>
43 #include <sys/wait.h>
44 #include <time.h>
45 #include <unistd.h>
46 #include <zlib.h>
47
48 #include "IgHook_IgHookTrace.h"
49 #include <algorithm>
50 #include <cmath>
51 #include <list>
52 #include <stack>
53 #include <sys/stat.h>
54
55 // dlopen (link with -ldl)
56 #include <dlfcn.h>
57
58 #define MAX_EVT_NAME_LEN 256
59 #define NUM_PMCS PFMLIB_MAX_PMCS
60 #define NUM_PMDS PFMLIB_MAX_PMDS
61 #define FMT_NAME PFM_DFL_SMPL_NAME
62 #define BPL ( sizeof( uint64_t ) << 3 )
63 #define LBPL 6
64
65 #define SYM_NAME_MAX_LENGTH 10000
66 #define MAX_OUTPUT_FILENAME_LENGTH 1024
67 #define MAX_EVENT_NAME_LENGTH 500
68 #define MAX_PREFIX_NAME_LENGTH 1024
69 #define FILENAME_MAX_LENGTH 1024
70
71 #define MAX_NUMBER_OF_PROGRAMMABLE_COUNTERS 4
72
73 #define cpuid( func, ax, bx, cx, dx ) \
74 __asm__ __volatile__( "cpuid" : "=a"( ax ), "=b"( bx ), "=c"( cx ), "=d"( dx ) : "a"( func ) );
75
76 static pfarg_pmd_t pd_smpl[NUM_PMDS];
77 static uint64_t collected_samples, collected_partial;
78 static int ctx_fd;
79 static pfm_dfl_smpl_hdr_t* hdr;
80 static uint64_t ovfl_count;
81 static size_t entry_size;
82 static unsigned int num_smpl_pmds;
83 static std::vector<std::map<std::string, std::map<unsigned long, unsigned int>>>
84 samples( MAX_NUMBER_OF_PROGRAMMABLE_COUNTERS ); // a map of modules each containing numbers of samples of their
85 // addresses
86 static std::vector<std::map<std::string, std::vector<unsigned long int>>>
87 results( MAX_NUMBER_OF_PROGRAMMABLE_COUNTERS ); // a map of modules and their result values across multiple events
88 static uint64_t last_overflow;
89 static uint64_t last_count;
90 static int sp[MAX_NUMBER_OF_PROGRAMMABLE_COUNTERS];
91
92 static std::stack<std::pair<INamedInterface*, std::vector<unsigned long int>>> alg_stack;
93 /*END: perfmon*/
94
95 namespace {
97 template <typename T>
98 inline T function_cast( void* p ) {
99 union {
100 void* object;
101 T function;
102 } caster;
103 caster.object = p;
104 return caster.function;
105 }
106 class PFMon {
107 public:
108 bool loaded;
109 typedef void ( *pfm_stop_t )( int );
110 pfm_stop_t pfm_stop;
111 typedef void ( *pfm_self_stop_t )( int );
112 pfm_self_stop_t pfm_self_stop;
113 typedef os_err_t ( *pfm_restart_t )( int );
114 pfm_restart_t pfm_restart;
115 typedef int ( *pfm_read_pmds_t )( int, pfarg_pmd_t*, int );
116 pfm_read_pmds_t pfm_read_pmds;
117 typedef pfm_err_t ( *pfm_initialize_t )();
118 pfm_initialize_t pfm_initialize;
119 typedef pfm_err_t ( *pfm_find_full_event_t )( const char*, pfmlib_event_t* );
120 pfm_find_full_event_t pfm_find_full_event;
121 typedef pfm_err_t ( *pfm_dispatch_events_t )( pfmlib_input_param_t*, void*, pfmlib_output_param_t*, void* );
122 pfm_dispatch_events_t pfm_dispatch_events;
123 typedef os_err_t ( *pfm_create_context_t )( pfarg_ctx_t*, char*, void*, size_t );
124 pfm_create_context_t pfm_create_context;
125 typedef os_err_t ( *pfm_write_pmcs_t )( int, pfarg_pmc_t*, int );
126 pfm_write_pmcs_t pfm_write_pmcs;
127 typedef os_err_t ( *pfm_write_pmds_t )( int, pfarg_pmd_t*, int );
128 pfm_write_pmds_t pfm_write_pmds;
129 typedef os_err_t ( *pfm_load_context_t )( int, pfarg_load_t* );
130 pfm_load_context_t pfm_load_context;
131 typedef os_err_t ( *pfm_start_t )( int fd, pfarg_start_t* );
132 pfm_start_t pfm_start;
133 typedef char* ( *pfm_strerror_t )( int );
134 pfm_strerror_t pfm_strerror;
135 typedef pfm_err_t ( *pfm_set_options_t )( pfmlib_options_t* );
136 pfm_set_options_t pfm_set_options;
137 typedef pfm_err_t ( *pfm_get_num_counters_t )( unsigned int* );
138 pfm_get_num_counters_t pfm_get_num_counters;
139 static PFMon& instance() { return s_instance; }
140
141 private:
142 // static void failure() { throw 1; }
143
144 void* handle;
145
146 PFMon() {
147 handle = dlopen( "libpfm.so", RTLD_NOW );
148 if ( handle ) {
149 loaded = true;
150 } else {
151 loaded = false;
152 }
153 if ( loaded ) {
154 pfm_start = function_cast<pfm_start_t>( dlsym( handle, "pfm_start" ) );
155 pfm_stop = function_cast<pfm_stop_t>( dlsym( handle, "pfm_stop" ) );
156 pfm_self_stop = function_cast<pfm_self_stop_t>( dlsym( handle, "pfm_stop" ) ); // it's the same
157 pfm_restart = function_cast<pfm_restart_t>( dlsym( handle, "pfm_restart" ) );
158 pfm_read_pmds = function_cast<pfm_read_pmds_t>( dlsym( handle, "pfm_read_pmds" ) );
159 pfm_initialize = function_cast<pfm_initialize_t>( dlsym( handle, "pfm_initialize" ) );
160 pfm_find_full_event = function_cast<pfm_find_full_event_t>( dlsym( handle, "pfm_find_full_event" ) );
161 pfm_dispatch_events = function_cast<pfm_dispatch_events_t>( dlsym( handle, "pfm_dispatch_events" ) );
162 pfm_create_context = function_cast<pfm_create_context_t>( dlsym( handle, "pfm_create_context" ) );
163 pfm_write_pmcs = function_cast<pfm_write_pmcs_t>( dlsym( handle, "pfm_write_pmcs" ) );
164 pfm_write_pmds = function_cast<pfm_write_pmds_t>( dlsym( handle, "pfm_write_pmds" ) );
165 pfm_load_context = function_cast<pfm_load_context_t>( dlsym( handle, "pfm_load_context" ) );
166 pfm_strerror = function_cast<pfm_strerror_t>( dlsym( handle, "pfm_strerror" ) );
167 pfm_set_options = function_cast<pfm_set_options_t>( dlsym( handle, "pfm_set_options" ) );
168 pfm_get_num_counters = function_cast<pfm_get_num_counters_t>( dlsym( handle, "pfm_get_num_counters" ) );
169 } else {
170 // pfm_start = pfm_stop = pfm_self_stop = pfm_restart = pfm_read_pmds = pfm_initialize = pfm_find_full_event =
171 // pfm_dispatch_events = pfm_create_context = pfm_write_pmcs = pfm_write_pmds = pfm_load_context = pfm_strerror
172 // = pfm_set_options = pfm_get_num_counters = failure;
173 }
174 }
175 ~PFMon() {
176 if ( handle ) dlclose( handle );
177 }
178
179 static PFMon s_instance;
180 };
181
182 PFMon PFMon::s_instance;
183 } // namespace
184
185 // ============================================================================
186 // GaudiAlg
187 // ============================================================================
188 // ============================================================================
198 class PerfMonAuditor : virtual public Auditor {
199 public:
200 void before( StandardEventType evt, INamedInterface* alg ) override;
201 void after( StandardEventType evt, INamedInterface* alg, const StatusCode& sc ) override;
202 using Auditor::after;
203 using Auditor::before;
204
205 private:
206 void i_beforeInitialize( INamedInterface* alg );
207 void i_afterInitialize( INamedInterface* alg );
208 void i_beforeExecute( INamedInterface* alg );
209 void i_afterExecute( INamedInterface* alg );
210
211 public:
212 StatusCode initialize() override;
213 StatusCode finalize() override;
214 int is_nehalem() {
215 #ifdef __ICC
216 // Disable ICC remark #593: variable "x" was set but never used
217 # pragma warning( push )
218 # pragma warning( disable : 593 )
219 #endif
220 int a, b, c, d;
221 cpuid( 1, a, b, c, d );
222 int sse4_2_mask = 1 << 20;
223 if ( c & sse4_2_mask )
224 return 1;
225 else
226 return 0;
227 #ifdef __ICC
228 # pragma warning( pop )
229 #endif
230 }
231
232 private:
233 PFMon& m_pfm;
234 /*
235 typedef void (*pfm_stop_t)(int);
236 pfm_stop_t pfm_stop;
237 typedef void (*pfm_self_stop_t)(int);
238 pfm_self_stop_t pfm_self_stop;
239
240 typedef os_err_t (*pfm_restart_t)(int);
241 pfm_restart_t pfm_restart;
242
243 //typedef int (*pfm_read_pmds_t)(int, pfarg_pmd_t*, int);
244 //pfm_read_pmds_t pfm_read_pmds;
245
246 typedef pfm_err_t (*pfm_initialize_t)();
247 pfm_initialize_t pfm_initialize;
248 typedef pfm_err_t (*pfm_find_full_event_t)(const char *, pfmlib_event_t *);
249 pfm_find_full_event_t pfm_find_full_event;
250 typedef pfm_err_t (*pfm_dispatch_events_t)(pfmlib_input_param_t *, void *, pfmlib_output_param_t *, void *);
251 pfm_dispatch_events_t pfm_dispatch_events;
252 typedef os_err_t (*pfm_create_context_t)(pfarg_ctx_t *, char *, void *, size_t);
253 pfm_create_context_t pfm_create_context;
254 typedef os_err_t (*pfm_write_pmcs_t)(int, pfarg_pmc_t *, int);
255 pfm_write_pmcs_t pfm_write_pmcs;
256 typedef os_err_t (*pfm_write_pmds_t)(int, pfarg_pmd_t *, int);
257 pfm_write_pmds_t pfm_write_pmds;
258 typedef os_err_t (*pfm_load_context_t)(int, pfarg_load_t *);
259 pfm_load_context_t pfm_load_context;
260 typedef os_err_t (*pfm_start_t)(int fd, pfarg_start_t *);
261 pfm_start_t pfm_start;
262 typedef char* (*pfm_strerror_t)(int);
263 pfm_strerror_t pfm_strerror;
264 typedef pfm_err_t (*pfm_set_options_t)(pfmlib_options_t *);
265 pfm_set_options_t pfm_set_options;
266 typedef pfm_err_t (*pfm_get_num_counters_t)(unsigned int *);
267 pfm_get_num_counters_t pfm_get_num_counters;
268 */
269
270 public:
271 PerfMonAuditor( const std::string& name, ISvcLocator* pSvc )
272 : // standard constructor
273 Auditor( name, pSvc )
274 , m_pfm( PFMon::instance() )
275 , m_map()
276 , m_indent( 0 )
277 , m_inEvent( false ) {
278 is_nehalem_ret = is_nehalem();
279 declareProperty( "EVENT0", event_str[0] );
280 declareProperty( "EVENT1", event_str[1] );
281 declareProperty( "EVENT2", event_str[2] );
282 declareProperty( "EVENT3", event_str[3] );
283 declareProperty( "FAMILY", family );
284 declareProperty( "PREFIX", prefix );
285 declareProperty( "INV0", inv[0] );
286 declareProperty( "INV1", inv[1] );
287 declareProperty( "INV2", inv[2] );
288 declareProperty( "INV3", inv[3] );
289 declareProperty( "CMASK0", cmask[0] );
290 declareProperty( "CMASK1", cmask[1] );
291 declareProperty( "CMASK2", cmask[2] );
292 declareProperty( "CMASK3", cmask[3] );
293 declareProperty( "SP0", sp[0] );
294 declareProperty( "SP1", sp[1] );
295 declareProperty( "SP2", sp[2] );
296 declareProperty( "SP3", sp[3] );
297 declareProperty( "SAMPLE", sampling );
298 declareProperty( "START_AT_EVENT", start_at_event );
299 declareProperty( "IS_NEHALEM", is_nehalem_ret );
300
302 /*
303 // loading functions from PFM library
304 void* handle = dlopen("libpfm.so", RTLD_NOW);
305 if (!handle) {
306 // error() << "Cannot open library: " << dlerror() << endmsg;
307 }
308 typedef void (*hello_t)();
309 hello_t hello = (hello_t) dlsym(handle, "hello");
310 if (!hello) {
311 // error() << "Cannot load symbol 'hello': " << dlerror() << endmsg;
312 dlclose(handle);
313 }
314
315 pfm_start = (pfm_start_t) dlsym(handle, "pfm_start");
316 pfm_stop = (pfm_stop_t) dlsym(handle, "pfm_stop");
317 pfm_self_stop = (pfm_self_stop_t) dlsym(handle, "pfm_stop"); //it's the same
318 pfm_restart = (pfm_restart_t) dlsym(handle, "pfm_restart");
319 //pfm_read_pmds = (pfm_read_pmds_t) dlsym(handle, "pfm_read_pmds");
320 pfm_initialize = (pfm_initialize_t) dlsym(handle, "pfm_initialize");
321 pfm_find_full_event = (pfm_find_full_event_t) dlsym(handle, "pfm_find_full_event");
322 pfm_dispatch_events = (pfm_dispatch_events_t) dlsym(handle, "pfm_dispatch_events");
323 pfm_create_context = (pfm_create_context_t) dlsym(handle, "pfm_create_context");
324 pfm_write_pmcs = (pfm_write_pmcs_t) dlsym(handle, "pfm_write_pmcs");
325 pfm_write_pmds = (pfm_write_pmds_t) dlsym(handle, "pfm_write_pmds");
326 pfm_load_context = (pfm_load_context_t) dlsym(handle, "pfm_load_context");
327 pfm_strerror = (pfm_strerror_t) dlsym(handle, "pfm_strerror");
328 pfm_set_options = (pfm_set_options_t) dlsym(handle, "pfm_set_options");
329 pfm_get_num_counters = (pfm_get_num_counters_t) dlsym(handle, "pfm_get_num_counters");
330 // use it to do the calculation
331 // info() << "Calling hello..." << endmsg;
332 // hello();
333
334 // close the library
335 // info() << "Closing library..." << endmsg;
336 dlclose(handle);
337 */
338
340 }
341
342 virtual ~PerfMonAuditor() {} // virtual destructor
343
344 private:
345 PerfMonAuditor(); // the default constructor is disabled
346 PerfMonAuditor( const PerfMonAuditor& ); // copy constructor is disabled
347 PerfMonAuditor& operator=( const PerfMonAuditor& ); // assignement operator is disabled
348
349 private:
350 typedef GaudiUtils::VectorMap<const INamedInterface*, int> Map;
351 Map m_map;
352 int m_indent; // indentation level
353 bool m_inEvent; // "In event" flag
354
355 private:
356 int is_nehalem_ret;
357
358 pfmlib_input_param_t inp;
359 pfmlib_output_param_t outp;
360 pfarg_ctx_t ctx;
361 pfarg_pmd_t pd[NUM_PMDS];
362 pfarg_pmc_t pc[NUM_PMCS];
363 pfarg_load_t load_arg;
364 int fd;
365 unsigned int i;
366 int ret;
367 void startpm();
368 void pausepm();
369 void stoppm();
370 void finalizepm();
371 std::string event_str[MAX_NUMBER_OF_PROGRAMMABLE_COUNTERS];
372 std::string prefix;
373 std::string family;
374 char event_cstr[MAX_NUMBER_OF_PROGRAMMABLE_COUNTERS][MAX_EVENT_NAME_LENGTH];
375 char prefix_cstr[MAX_PREFIX_NAME_LENGTH];
376 unsigned int ph_ev_count;
377 bool inv[MAX_NUMBER_OF_PROGRAMMABLE_COUNTERS];
378 unsigned int cmask[MAX_NUMBER_OF_PROGRAMMABLE_COUNTERS];
379 unsigned int start_at_event;
380 pfmlib_core_input_param_t params;
381 pfmlib_nhm_input_param_t nhm_params;
382 int used_counters_number;
383 bool nehalem;
384 bool westmere;
385 bool core;
386
387 bool sampling;
388 int detect_unavail_pmu_regs( int fd, pfmlib_regmask_t* r_pmcs, pfmlib_regmask_t* r_pmds );
389 int detect_unavail_pmcs( int fd, pfmlib_regmask_t* r_pmcs ) { return detect_unavail_pmu_regs( fd, r_pmcs, NULL ); }
390 void pfm_bv_set( uint64_t* bv, uint16_t rnum ) { bv[rnum >> LBPL] |= 1UL << ( rnum & ( BPL - 1 ) ); }
391 int pfm_bv_isset( uint64_t* bv, uint16_t rnum ) {
392 return bv[rnum >> LBPL] & ( 1UL << ( rnum & ( BPL - 1 ) ) ) ? 1 : 0;
393 }
394 void pfm_bv_copy( uint64_t* d, uint64_t* j, uint16_t n ) {
395 if ( n <= BPL )
396 *d = *j;
397 else {
398 memcpy( d, j, ( n >> LBPL ) * sizeof( uint64_t ) );
399 }
400 }
401 static void process_smpl_buf( pfm_dfl_smpl_hdr_t* hdr, size_t entry_size );
402 static void sigio_handler( int, siginfo_t*, void* ); // dlopen ==>
403 // void sigio_handler(int, struct siginfo *, struct sigcontext *);
404 void start_smpl();
405 void stop_smpl();
406 void finalize_smpl();
407 pfm_dfl_smpl_arg_t buf_arg;
408 pfarg_load_t load_args;
409 void* buf_addr;
410 unsigned num_counters;
411 unsigned int max_pmd;
412 pfmlib_options_t pfmlib_options;
413
414 int level;
415
416 bool first_alg;
417 std::string first_alg_name;
418 bool event_count_reached;
419 };
420
421 void PerfMonAuditor::startpm() {
422 memset( &ctx, 0, sizeof( ctx ) );
423 memset( &inp, 0, sizeof( inp ) );
424 memset( &outp, 0, sizeof( outp ) );
425 memset( pd, 0, sizeof( pd ) );
426 memset( pc, 0, sizeof( pc ) );
427 memset( &load_arg, 0, sizeof( load_arg ) );
428 memset( &params, 0, sizeof( params ) );
429 memset( &nhm_params, 0, sizeof( nhm_params ) );
430
431 for ( int i = 0; i < used_counters_number; i++ ) {
432 ret = m_pfm.pfm_find_full_event( event_cstr[i], &inp.pfp_events[i] );
433 if ( ret != PFMLIB_SUCCESS ) {
434 error() << "ERROR: cannot find event: " << event_cstr[i] << ". Aborting..." << endmsg;
435 }
436 }
437 inp.pfp_dfl_plm = PFM_PLM3;
438 inp.pfp_event_count = 4;
439 for ( int i = 0; i < used_counters_number; i++ ) {
440 if ( inv[i] ) {
441 ( params.pfp_core_counters[i] ).flags |= PFM_CORE_SEL_INV;
442 ( nhm_params.pfp_nhm_counters[i] ).flags |= PFM_NHM_SEL_INV;
443 }
444 if ( cmask[i] > 0 ) {
445 ( params.pfp_core_counters[i] ).cnt_mask = cmask[i];
446 ( nhm_params.pfp_nhm_counters[i] ).cnt_mask = cmask[i];
447 }
448 }
449 if ( nehalem || westmere ) {
450 ret = m_pfm.pfm_dispatch_events( &inp, &nhm_params, &outp, NULL );
451 } else {
452 ret = m_pfm.pfm_dispatch_events( &inp, &params, &outp, NULL );
453 }
454 if ( ret != PFMLIB_SUCCESS ) {
455 error() << "ERROR: cannot dispatch events: " << m_pfm.pfm_strerror( ret ) << ". Aborting..." << endmsg;
456 }
457 for ( unsigned int i = 0; i < outp.pfp_pmc_count; i++ ) {
458 pc[i].reg_num = outp.pfp_pmcs[i].reg_num;
459 pc[i].reg_value = outp.pfp_pmcs[i].reg_value;
460 }
461 for ( unsigned int i = 0; i < outp.pfp_pmd_count; i++ ) {
462 pd[i].reg_num = outp.pfp_pmds[i].reg_num;
463 pd[i].reg_value = 0;
464 }
465 fd = m_pfm.pfm_create_context( &ctx, NULL, 0, 0 );
466 if ( fd == -1 ) { error() << "ERROR: Context not created. Aborting..." << endmsg; }
467 if ( m_pfm.pfm_write_pmcs( fd, pc, outp.pfp_pmc_count ) == -1 ) {
468 error() << "ERROR: Could not write pmcs. Aborting..." << endmsg;
469 }
470 if ( m_pfm.pfm_write_pmds( fd, pd, outp.pfp_pmd_count ) == -1 ) {
471 error() << "ERROR: Could not write pmds. Aborting..." << endmsg;
472 }
473 load_arg.load_pid = getpid();
474 if ( m_pfm.pfm_load_context( fd, &load_arg ) == -1 ) {
475 error() << "ERROR: Could not load context. Aborting..." << endmsg;
476 // error() << "Could not read pmds" << endmsg;
477 }
478
479 m_pfm.pfm_start( fd, NULL );
480 }
481
482 // stoppm()
483 // const ModuleDescription& desc : description of the module that just finished its execution (we are only interested in
484 // its name)
485 // stops the counting calling pfm_stop() and stores the counting results into the "results" map
486 void PerfMonAuditor::stoppm() {
487 m_pfm.pfm_stop( fd );
488 if ( m_pfm.pfm_read_pmds( fd, pd, inp.pfp_event_count ) == -1 ) { error() << "Could not read pmds" << endmsg; }
489 for ( int i = 0; i < used_counters_number; i++ ) {
490 results[i][( alg_stack.top().first )->name()].push_back( alg_stack.top().second[i] + pd[i].reg_value );
491 }
492
493 close( fd );
494 }
495
496 void PerfMonAuditor::pausepm() {
497 m_pfm.pfm_stop( fd );
498 if ( m_pfm.pfm_read_pmds( fd, pd, inp.pfp_event_count ) == -1 ) { error() << "Could not read pmds" << endmsg; }
499
500 for ( int i = 0; i < used_counters_number; i++ ) { alg_stack.top().second[i] += pd[i].reg_value; }
501
502 close( fd );
503 }
504
505 // finalizepm()
506 // called when all the countings of the current event are finished, it dumps the results
507 // into the output file corresponding to the event being counted
508 void PerfMonAuditor::finalizepm() {
509 info() << "start of finalizepm ucn:" << used_counters_number << endmsg;
510 for ( int i = 0; i < used_counters_number; i++ ) {
511 std::string filename = prefix_cstr;
512 filename += '_';
513 filename += event_cstr[i];
514
515 for ( auto& c : filename )
516 if ( c == ':' ) c = '-';
517
518 if ( inv[i] ) filename += "_INV_1";
519 if ( cmask[i] > 0 ) filename += "_CMASK_" + std::to_string( cmask[i] );
520 filename += ".txt";
521
522 info() << "Filename:" << filename << endmsg;
523 FILE* outfile = fopen( filename.c_str(), "w" );
524 if ( nehalem ) {
525 fprintf( outfile, "NHM " );
526 } else if ( westmere ) {
527 fprintf( outfile, "WSM " );
528 } else if ( core ) {
529 fprintf( outfile, "CORE " );
530 }
531 fprintf( outfile, "%s %d %d %d\n", event_cstr[i], cmask[i], inv[i], sp[i] );
532 for ( std::map<std::string, std::vector<unsigned long int>>::iterator it = ( results[i] ).begin();
533 it != ( results[i] ).end(); it++ ) {
534 fprintf( outfile, "%s\n", ( it->first ).c_str() );
535 for ( std::vector<unsigned long int>::iterator j = ( it->second ).begin(); j != ( it->second ).end(); j++ ) {
536 fprintf( outfile, "%lu\n", *j );
537 }
538 }
539 fclose( outfile );
540 }
541 }
542
543 StatusCode PerfMonAuditor::initialize() {
544 if ( !m_pfm.loaded ) {
545 error() << "pfm library could not be loaded" << endmsg;
546 return StatusCode::FAILURE;
547 }
548
549 info() << "Initializing..." << endmsg;
550 StatusCode sc = Auditor::initialize();
551 if ( sc.isFailure() ) { return sc; }
552 used_counters_number = 0;
553 for ( int i = 0; i < MAX_NUMBER_OF_PROGRAMMABLE_COUNTERS; i++ ) {
554 if ( event_str[i].length() > 0 ) used_counters_number++;
555 }
556 for ( int i = 0; i < MAX_NUMBER_OF_PROGRAMMABLE_COUNTERS; i++ ) { strcpy( event_cstr[i], event_str[i].c_str() ); }
557 strcpy( prefix_cstr, prefix.c_str() );
558
559 if ( m_pfm.pfm_initialize() != PFMLIB_SUCCESS ) { error() << "Cannot initialize perfmon!!" << endmsg; }
560 ph_ev_count = 0;
561 first_alg = true;
562 event_count_reached = false;
563 nehalem = false;
564 core = false;
565 westmere = false;
566 if ( family.compare( "CORE" ) == 0 )
567 core = true;
568 else if ( family.compare( "NEHALEM" ) == 0 )
569 nehalem = true;
570 else if ( family.compare( "WESTMERE" ) == 0 )
571 westmere = true;
572 else {
573 error() << "ERROR: Unsupported processor family " << family << ". aborting..." << endmsg;
574 }
575
576 info() << "Initialized!" << endmsg;
577 return StatusCode::SUCCESS;
578 }
579
580 // process_smpl_buf()
581 // pfm_dfl_smpl_hdr_t *hdr : pointer to header of the buffer containing addresses sampled during the sampling process
582 // size_t entry_size : size of each entry, used to navigate through the various entries
583 // called when the sampling buffer is full, saves the samples into memory ("samples" map)
584 void PerfMonAuditor::process_smpl_buf( pfm_dfl_smpl_hdr_t* hdr, size_t entry_size ) {
586 pfm_dfl_smpl_entry_t* ent;
587 size_t pos, count;
588 uint64_t entry;
589 if ( hdr->hdr_overflows == last_overflow && hdr->hdr_count == last_count ) {
590 printf( "skipping identical set of samples...\n" );
591 return;
592 }
593 count = hdr->hdr_count;
594 ent = (pfm_dfl_smpl_entry_t*)( hdr + 1 );
595 pos = (unsigned long)ent;
596 entry = collected_samples;
597 while ( count-- ) {
598 // if(ent->ovfl_pmd>=0 && ent->ovfl_pmd<=3)
599 if ( ent->ovfl_pmd <= 3 ) {
600 ( ( samples[ent->ovfl_pmd] )[( alg_stack.top().first )->name()] )[(unsigned long)( ent->ip )]++;
601 }
602 pos += entry_size;
603 ent = (pfm_dfl_smpl_entry_t*)pos;
604 entry++;
605 }
606 collected_samples = entry;
607 last_overflow = hdr->hdr_overflows;
608 if ( last_count != hdr->hdr_count && ( last_count || last_overflow == 0 ) ) { collected_partial += hdr->hdr_count; }
609 last_count = hdr->hdr_count;
610 return;
611 }
612
613 // sigio_handler()
614 // int n : signal number of the signal being delivered
615 // siginfo_t *info : pointer to a siginfo_t structure containing info about the signal
616 // signal handler used to catch sampling buffer overflows. When they occur it calls the process_smpl_buf() function
617 void PerfMonAuditor::sigio_handler( int /*n*/, siginfo_t* /*info*/, void* ) {
618 PFMon& pfm = PFMon::instance();
619 pfarg_msg_t msg;
620 int fd = ctx_fd;
621 int r;
622 if ( fd != ctx_fd ) {
623 // error() << "ERROR: handler does not get valid file descriptor. Aborting..." << endmsg;
624 }
625 if ( pfm.pfm_read_pmds( fd, pd_smpl + 1, 1 ) == -1 ) {
626 // error() << "ERROR: pfm_read_pmds: " << strerror(errno) << ". Aborting..." << endmsg;
627 }
628 while ( true ) {
629 r = read( fd, &msg, sizeof( msg ) );
630 if ( r != sizeof( msg ) ) {
631 if ( r == -1 && errno == EINTR ) {
632 printf( "read interrupted, retrying\n" );
633 continue;
634 }
635 // error() << "ERROR: cannot read overflow message: " << strerror(errno) << ". Aborting..." << endmsg;
636 }
637 break;
638 }
639 switch ( msg.type ) {
640 case PFM_MSG_OVFL: // the sampling buffer is full
641 process_smpl_buf( hdr, entry_size );
642 ovfl_count++;
643 if ( pfm.pfm_restart( fd ) ) {
644 if ( errno != EBUSY ) {
645 // error() << "ERROR: pfm_restart error errno " << errno << ". Aborting..." << endmsg;
646 } else {
647 printf( "pfm_restart: task probably terminated \n" );
648 }
649 }
650 break;
651 default:
652 // error() << "ERROR: unknown message type " << msg.type << ". Aborting..." << endmsg;
653 break;
654 }
655 }
656
657 // start_smpl()
658 // const ModuleDescription& desc : description of the module that is just starting its execution (we are only interested
659 // in its name)
660 // initializes all the necessary structures to start the sampling, calling pfm_self_start()
661 void PerfMonAuditor::start_smpl() {
662 ovfl_count = 0;
663 num_smpl_pmds = 0;
664 last_overflow = ~0;
665 max_pmd = 0;
666 memset( &pfmlib_options, 0, sizeof( pfmlib_options ) );
667 pfmlib_options.pfm_debug = 0;
668 pfmlib_options.pfm_verbose = 0;
669 m_pfm.pfm_set_options( &pfmlib_options );
670 ret = m_pfm.pfm_initialize();
671 if ( ret != PFMLIB_SUCCESS ) {
672 error() << "ERROR: Cannot initialize library: " << m_pfm.pfm_strerror( ret ) << ". Aborting..." << endmsg;
673 }
674 struct sigaction act;
675 memset( &act, 0, sizeof( act ) );
676 act.sa_sigaction = sigio_handler; // dlopen() ==>
677 // act.sa_handler = (sig_t)&sigio_handler;
678 sigaction( SIGIO, &act, 0 );
679 memset( &ctx, 0, sizeof( ctx ) );
680 memset( &buf_arg, 0, sizeof( buf_arg ) );
681 memset( &inp, 0, sizeof( inp ) );
682 memset( &outp, 0, sizeof( outp ) );
683 memset( pd_smpl, 0, sizeof( pd_smpl ) );
684 memset( pc, 0, sizeof( pc ) );
685 memset( &load_args, 0, sizeof( load_args ) );
686 m_pfm.pfm_get_num_counters( &num_counters );
687 memset( &params, 0, sizeof( params ) );
688 memset( &nhm_params, 0, sizeof( nhm_params ) );
689
690 for ( int i = 0; i < used_counters_number; i++ ) {
691 ret = m_pfm.pfm_find_full_event( event_cstr[i], &inp.pfp_events[i] );
692 if ( ret != PFMLIB_SUCCESS ) {
693 error() << "ERROR: cannot find event: " << event_cstr[i] << ". Aborting..." << endmsg;
694 }
695 }
696 inp.pfp_dfl_plm = PFM_PLM3;
697 inp.pfp_event_count = 4;
698 for ( int i = 0; i < used_counters_number; i++ ) {
699 if ( inv[i] ) {
700 ( params.pfp_core_counters[i] ).flags |= PFM_CORE_SEL_INV;
701 ( nhm_params.pfp_nhm_counters[i] ).flags |= PFM_NHM_SEL_INV;
702 }
703 if ( cmask[i] > 0 ) {
704 ( params.pfp_core_counters[i] ).cnt_mask = cmask[i];
705 ( nhm_params.pfp_nhm_counters[i] ).cnt_mask = cmask[i];
706 }
707 }
708 if ( nehalem || westmere ) {
709 ret = m_pfm.pfm_dispatch_events( &inp, &nhm_params, &outp, NULL );
710 } else {
711 ret = m_pfm.pfm_dispatch_events( &inp, &params, &outp, NULL );
712 }
713 if ( ret != PFMLIB_SUCCESS ) {
714 error() << "ERROR: cannot configure events: " << m_pfm.pfm_strerror( ret ) << ". Aborting..." << endmsg;
715 }
716 for ( unsigned int i = 0; i < outp.pfp_pmc_count; i++ ) {
717 pc[i].reg_num = outp.pfp_pmcs[i].reg_num;
718 pc[i].reg_value = outp.pfp_pmcs[i].reg_value;
719 }
720 for ( unsigned int i = 0; i < outp.pfp_pmd_count; i++ ) {
721 pd_smpl[i].reg_num = outp.pfp_pmds[i].reg_num;
722 if ( i ) {
723 pfm_bv_set( pd_smpl[0].reg_smpl_pmds, pd_smpl[i].reg_num );
724 if ( pd_smpl[i].reg_num > max_pmd ) { max_pmd = pd_smpl[i].reg_num; }
725 num_smpl_pmds++;
726 }
727 }
728 for ( int i = 0; i < used_counters_number; i++ ) {
729 pd_smpl[i].reg_flags |= PFM_REGFL_OVFL_NOTIFY | PFM_REGFL_RANDOM;
730 pfm_bv_copy( pd_smpl[i].reg_reset_pmds, pd_smpl[i].reg_smpl_pmds, max_pmd );
731 pd_smpl[i].reg_value = ( uint64_t )( sp[i] * -1 );
732 pd_smpl[i].reg_short_reset = ( uint64_t )( sp[i] * -1 );
733 pd_smpl[i].reg_long_reset = ( uint64_t )( sp[i] * -1 );
734 pd_smpl[i].reg_random_seed = 5; // tocheck
735 pd_smpl[i].reg_random_mask = 0xff; // tocheck
736 }
737 entry_size = sizeof( pfm_dfl_smpl_entry_t ) + ( num_smpl_pmds << 3 );
738 ctx.ctx_flags = 0;
739 buf_arg.buf_size = 3 * getpagesize() + 512;
740 ctx_fd = m_pfm.pfm_create_context( &ctx, (char*)FMT_NAME, &buf_arg, sizeof( buf_arg ) );
741 if ( ctx_fd == -1 ) {
742 if ( errno == ENOSYS ) {
743 error() << "ERROR: Your kernel does not have performance monitoring support! Aborting..." << endmsg;
744 }
745 error() << "ERROR: Can't create PFM context " << strerror( errno ) << ". Aborting..." << endmsg;
746 }
747 buf_addr = mmap( NULL, buf_arg.buf_size, PROT_READ, MAP_PRIVATE, ctx_fd, 0 );
748 if ( buf_addr == MAP_FAILED ) {
749 error() << "ERROR: cannot mmap sampling buffer: " << strerror( errno ) << ". Aborting..." << endmsg;
750 }
751 hdr = (pfm_dfl_smpl_hdr_t*)buf_addr;
752 if ( PFM_VERSION_MAJOR( hdr->hdr_version ) < 1 ) {
753 error() << "ERROR: invalid buffer format version. Aborting..." << endmsg;
754 }
755 if ( m_pfm.pfm_write_pmcs( ctx_fd, pc, outp.pfp_pmc_count ) ) {
756 error() << "ERROR: pfm_write_pmcs error errno " << strerror( errno ) << ". Aborting..." << endmsg;
757 }
758 if ( m_pfm.pfm_write_pmds( ctx_fd, pd_smpl, outp.pfp_pmd_count ) ) {
759 error() << "ERROR: pfm_write_pmds error errno " << strerror( errno ) << ". Aborting..." << endmsg;
760 }
761 load_args.load_pid = getpid();
762 if ( m_pfm.pfm_load_context( ctx_fd, &load_args ) ) {
763 error() << "ERROR: pfm_load_context error errno " << strerror( errno ) << ". Aborting..." << endmsg;
764 }
765 ret = fcntl( ctx_fd, F_SETFL, fcntl( ctx_fd, F_GETFL, 0 ) | O_ASYNC );
766 if ( ret == -1 ) { error() << "ERROR: cannot set ASYNC: " << strerror( errno ) << ". Aborting..." << endmsg; }
767 ret = fcntl( ctx_fd, F_SETOWN, getpid() );
768 if ( ret == -1 ) { error() << "ERROR: cannot setown: " << strerror( errno ) << ". Aborting..." << endmsg; }
769 // pfm_self_start(ctx_fd); ==>
770 m_pfm.pfm_start( ctx_fd, NULL );
771 }
772
773 // stop_smpl()
774 // const ModuleDescription& desc : description of the module that just finished its execution (we are only interested in
775 // its name)
776 // stops the sampling and calls process_smpl_buf() one last time to process all the remaining samples
777 void PerfMonAuditor::stop_smpl() {
778 m_pfm.pfm_self_stop( ctx_fd );
779 process_smpl_buf( hdr, entry_size );
780 close( ctx_fd );
781 ret = munmap( hdr, buf_arg.buf_size );
782 if ( ret ) { error() << "Cannot unmap buffer: %s" << strerror( errno ) << endmsg; }
783 return;
784 }
785
786 // finalize_smpl()
787 // processes the sampling results in order to find library and offset of each sampled address, using the symbol() and
788 // tosymbol() functions,
789 // and then dumps the new found information into gzipped output files, to be processed later
790 void PerfMonAuditor::finalize_smpl() {
791 int err;
792 for ( int i = 0; i < used_counters_number; i++ ) {
793 std::string filename = prefix_cstr;
794 filename += '_';
795 filename += event_cstr[i];
796
797 for ( auto& c : filename )
798 if ( c == ':' ) c = '-';
799
800 if ( inv[i] ) filename += "_INV_1";
801 if ( cmask[i] > 0 ) filename += "_CMASK_" + std::to_string( cmask[i] );
802 filename += ".txt.gz";
803
804 gzFile outfile = gzopen( filename.c_str(), "wb" );
805 if ( outfile != NULL ) {
806 if ( nehalem ) {
807 gzprintf( outfile, "NHM " );
808 } else if ( westmere ) {
809 gzprintf( outfile, "WSM " );
810 } else if ( core ) {
811 gzprintf( outfile, "CORE " );
812 }
813 if ( gzprintf( outfile, "%s %d %d %d\n", event_cstr[i], cmask[i], inv[i], sp[i] ) <
814 (int)strlen( event_cstr[i] ) ) {
815 error() << "ERROR: gzputs err: " << gzerror( outfile, &err ) << ". Aborting..." << endmsg;
816 }
817 for ( std::map<std::string, std::map<unsigned long, unsigned int>>::iterator it = samples[i].begin();
818 it != samples[i].end(); it++ ) {
819 unsigned long long sum = 0;
820 for ( std::map<unsigned long, unsigned int>::iterator jt = ( it->second ).begin(); jt != ( it->second ).end();
821 jt++ ) {
822 sum += jt->second;
823 }
824 if ( gzprintf( outfile, "%s%%%llu\n", ( it->first ).c_str(), sum ) < (int)( ( it->first ).length() ) ) {
825 error() << "ERROR: gzputs err: " << gzerror( outfile, &err ) << ". Aborting..." << endmsg;
826 }
827 for ( std::map<unsigned long, unsigned int>::iterator jt = ( it->second ).begin(); jt != ( it->second ).end();
828 jt++ ) {
829 char sym_name[SYM_NAME_MAX_LENGTH];
830 bzero( sym_name, SYM_NAME_MAX_LENGTH );
831 const char* libName;
832 const char* symbolName;
833 int libOffset = 0;
834 int offset = 0;
835 void* sym_addr = IgHookTrace::tosymbol( (void*)( jt->first ) );
836 if ( sym_addr != NULL ) {
837 bool success = IgHookTrace::symbol( sym_addr, symbolName, libName, offset, libOffset );
838 if ( success ) {
839 if ( symbolName != NULL && strlen( symbolName ) > 0 ) {
840 strcpy( sym_name, symbolName );
841 strcat( sym_name, " " );
842 } else {
843 strcpy( sym_name, "??? " );
844 }
845 if ( libName != NULL && strlen( libName ) > 0 ) {
846 strcat( sym_name, libName );
847 strcat( sym_name, " " );
848 } else {
849 strcat( sym_name, "??? " );
850 }
851 sprintf( sym_name + strlen( sym_name ), "%d ", libOffset );
852 if ( strlen( sym_name ) <= 0 ) { error() << "ERROR: Symbol name length is zero. Aborting..." << endmsg; }
853 } else {
854 strcpy( sym_name, "??? ??? 0 " );
855 }
856 } else {
857 strcpy( sym_name, "??? ??? 0 " );
858 }
859 if ( gzprintf( outfile, "%s %d\n", sym_name, jt->second ) < (int)strlen( sym_name ) ) {
860 error() << "ERROR: gzputs err: " << gzerror( outfile, &err ) << endmsg;
861 }
862 }
863 }
864 } else {
865 error() << "ERROR: Could not open file: " << filename << ". Aborting..." << endmsg;
866 }
867 gzclose( outfile );
868 }
869 }
870
871 StatusCode PerfMonAuditor::finalize() {
872 if ( sampling == 0 )
873 finalizepm();
874 else
875 finalize_smpl();
876 return Auditor::finalize();
877 }
878
879 void PerfMonAuditor::before( StandardEventType evt, INamedInterface* alg ) {
880 switch ( evt ) {
881 case IAuditor::Initialize:
882 i_beforeInitialize( alg );
883 break;
884 case IAuditor::Execute:
885 i_beforeExecute( alg );
886 break;
887 default:
888 break;
889 }
890 return;
891 }
892
893 void PerfMonAuditor::after( StandardEventType evt, INamedInterface* alg, const StatusCode& ) {
894 switch ( evt ) {
895 case IAuditor::Initialize:
896 i_afterInitialize( alg );
897 break;
898 case IAuditor::Execute:
899 i_afterExecute( alg );
900 break;
901 default:
902 break;
903 }
904 return;
905 }
906
907 void PerfMonAuditor::i_beforeInitialize( INamedInterface* alg ) {
908 if ( !alg ) return;
909 return;
910 }
911
912 void PerfMonAuditor::i_afterInitialize( INamedInterface* alg ) {
913 if ( !alg ) return;
914 return;
915 }
916
917 void PerfMonAuditor::i_beforeExecute( INamedInterface* alg ) {
918 if ( !alg ) return;
919 // info() << "before:inside! " << alg->name() << endmsg;
920 if ( first_alg ) {
921 first_alg = false;
922 first_alg_name = alg->name();
923 // info() << "first_alg_name= " << alg->name() << endmsg;
924 }
925 if ( !event_count_reached ) {
926 if ( !first_alg_name.compare( alg->name() ) ) {
927 ph_ev_count++;
928 // info() << "EVENT COUNT: " << ph_ev_count << endmsg;
929 if ( ph_ev_count == start_at_event ) {
930 event_count_reached = true;
931 // info() << "!!! EVENT COUNT REACHED: " << ph_ev_count << endmsg;
932 }
933 }
934 }
935 if ( event_count_reached ) {
936 // info() << "before:inside! " << alg->name() << endmsg;
937
938 if ( !alg_stack.empty() ) {
939 if ( sampling == 0 )
940 pausepm(); // pausing father algorithm counting
941 else
942 stop_smpl();
943 }
944 ++m_indent;
945 std::vector<unsigned long int> zeroes( 4, 0 );
946 alg_stack.push( std::make_pair( alg, zeroes ) );
947 if ( sampling == 0 )
948 startpm();
949 else
950 start_smpl();
951 }
952 }
953
954 void PerfMonAuditor::i_afterExecute( INamedInterface* alg ) {
955 if ( !alg ) { return; } // info() << "after:inside! " << alg->name() << endmsg;
956
957 if ( event_count_reached ) {
958 // info() << "after:inside! " << alg->name() << endmsg;
959
960 if ( sampling == 0 )
961 stoppm();
962 else
963 stop_smpl();
964 alg_stack.pop();
965 --m_indent;
966 if ( !alg_stack.empty() ) {
967 if ( sampling == 0 )
968 startpm();
969 else
970 start_smpl(); // resuming father algorithm counting
971 }
972 }
973 }
974
975 DECLARE_COMPONENT( PerfMonAuditor )
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Definition: PerfMonAuditor.cpp:198
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Definition: StatusCode.h:50
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Definition: PerfMonAuditor.cpp:508
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Definition: IOTest.py:112
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Definition: PerfMonAuditor.cpp:893
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Definition: PerfMonAuditor.cpp:365
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Definition: PerfMonAuditor.cpp:360
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Definition: INamedInterface.h:15
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Definition: PerfMonAuditor.cpp:376
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Definition: perfmon_v2.h:27
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Definition: PerfMonAuditor.cpp:391
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Definition: PerfMonAuditor.cpp:418
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Definition: PerfMonAuditor.cpp:61
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Definition: PerfMonAuditor.cpp:661
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Definition: PerfMonAuditor.cpp:379
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Definition: PerfMonAuditor.cpp:584
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Definition: PerfMonAuditor.cpp:366
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Definition: PerfMonAuditor.cpp:387
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Definition: IAuditor.h:24
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Definition: perfmon.h:205
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Definition: PerfMonAuditor.cpp:73
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Definition: Auditor.cpp:193
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Definition: StatusCode.h:86
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Definition: PerfMonAuditor.cpp:410
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Definition: PerfMonAuditor.cpp:617
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Definition: PerfMonAuditor.cpp:384
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Definition: perfmon_v2.h:50
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Definition: PerfMonAuditor.cpp:543
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shortcut for the method msgStream(MSG::ERROR)
Definition: CommonMessaging.h:95
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Definition: perfmon_dfl_smpl.h:46
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Definition: PerfMonAuditor.cpp:917
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Definition: Auditor.cpp:64
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Definition: PerfMonAuditor.cpp:416
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Definition: StatusCode.h:130
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Definition: AttribStringParser.h:120
MAX_NUMBER_OF_PROGRAMMABLE_COUNTERS
#define MAX_NUMBER_OF_PROGRAMMABLE_COUNTERS
Definition: PerfMonAuditor.cpp:71
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Definition: PerfMonAuditor.cpp:353
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Definition: perfmon_dfl_smpl.h:51
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Definition: PerfMonAuditor.cpp:912
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Definition: PerfMonAuditor.cpp:907
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Definition: pfmlib_core.h:79
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int fd
Definition: PerfMonAuditor.cpp:364
perfmon.h
PerfMonAuditor::cmask
unsigned int cmask[MAX_NUMBER_OF_PROGRAMMABLE_COUNTERS]
Definition: PerfMonAuditor.cpp:378
PerfMonAuditor::load_arg
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Definition: PerfMonAuditor.cpp:363
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Definition: perfmon.h:210
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Definition: PerfMonAuditor.cpp:233
Auditor.h
PerfMonAuditor::~PerfMonAuditor
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Definition: PerfMonAuditor.cpp:342
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void before(StandardEventType, INamedInterface *) override
The following methods are meant to be implemented by the child class...
Definition: Auditor.cpp:67
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Definition: perfmon_v2.h:42
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MsgStream Modifier: endmsg. Calls the output method of the MsgStream.
Definition: MsgStream.h:192
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void before(StandardEventType evt, INamedInterface *alg) override
Definition: PerfMonAuditor.cpp:879
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Definition: pfmlib.h:108
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Definition: IOTest.py:94
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Definition: PerfMonAuditor.cpp:383
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Definition: PerfMonAuditor.cpp:385
Auditor
Base class from which all concrete auditor classes should be derived.
Definition: Auditor.h:34