X-Git-Url: http://git.lttng.org/?a=blobdiff_plain;f=lttv%2Flttv%2Fsync%2Fsync_chain_lttv.c;h=dc207babfb6bb949c46764c0fb4dce53787c874b;hb=482fe4814d81bd6109f8ddcada7784b288bfabda;hp=9b2b8fe26f378ebe0ac4adcb8354b971bbcd9d1a;hpb=d6ee500355b870e83d5cdbc431629999ec97794e;p=lttv.git diff --git a/lttv/lttv/sync/sync_chain_lttv.c b/lttv/lttv/sync/sync_chain_lttv.c index 9b2b8fe2..dc207bab 100644 --- a/lttv/lttv/sync/sync_chain_lttv.c +++ b/lttv/lttv/sync/sync_chain_lttv.c @@ -34,43 +34,28 @@ #include #include "sync_chain.h" - - -#ifndef g_info -#define g_info(format...) g_log (G_LOG_DOMAIN, G_LOG_LEVEL_INFO, format) -#endif +#include "sync_chain_lttv.h" static void init(); static void destroy(); -static void gfAppendAnalysisName(gpointer data, gpointer user_data); static void gfAddModuleOption(gpointer data, gpointer user_data); static void gfRemoveModuleOption(gpointer data, gpointer user_data); -GQueue processingModules= G_QUEUE_INIT; -GQueue matchingModules= G_QUEUE_INIT; -GQueue analysisModules= G_QUEUE_INIT; -GQueue moduleOptions= G_QUEUE_INIT; - -static char* argHelpNone= "none"; static ModuleOption optionSync= { .longName= "sync", .hasArg= NO_ARG, - {.present= false}, .optionHelp= "synchronize the time between the traces", }; -static char graphsDir[20]; static ModuleOption optionSyncStats= { .longName= "sync-stats", .hasArg= NO_ARG, - {.present= false}, .optionHelp= "print statistics about the time synchronization", }; static ModuleOption optionSyncNull= { .longName= "sync-null", .hasArg= NO_ARG, - {.present= false}, .optionHelp= "read the events but do not perform any processing", }; static GString* analysisModulesNames; @@ -82,15 +67,16 @@ static ModuleOption optionSyncAnalysis= { static ModuleOption optionSyncGraphs= { .longName= "sync-graphs", .hasArg= NO_ARG, - {.present= false}, .optionHelp= "output gnuplot graph showing synchronization points", }; +static char graphsDir[20]; static ModuleOption optionSyncGraphsDir= { .longName= "sync-graphs-dir", .hasArg= REQUIRED_ARG, .optionHelp= "specify the directory where to store the graphs", }; + /* * Module init function * @@ -106,10 +92,10 @@ static void init() { int retval; - g_debug("\t\t\tXXXX sync init\n"); + g_debug("Sync init"); g_assert(g_queue_get_length(&analysisModules) > 0); - optionSyncAnalysis.arg = ((AnalysisModule*) + optionSyncAnalysis.arg= ((AnalysisModule*) g_queue_peek_head(&analysisModules))->name; analysisModulesNames= g_string_new(""); g_queue_foreach(&analysisModules, &gfAppendAnalysisName, @@ -134,7 +120,6 @@ static void init() g_queue_push_head(&moduleOptions, &optionSync); g_queue_foreach(&moduleOptions, &gfAddModuleOption, NULL); - } @@ -143,7 +128,7 @@ static void init() */ static void destroy() { - g_debug("\t\t\tXXXX sync destroy\n"); + g_debug("Sync destroy"); g_queue_foreach(&moduleOptions, &gfRemoveModuleOption, NULL); g_string_free(analysisModulesNames, TRUE); @@ -162,21 +147,23 @@ static void destroy() * * Args: * traceSetContext: traceset + * + * Returns: + * false if synchronization was not performed, true otherwise */ -void syncTraceset(LttvTracesetContext* const traceSetContext) +bool syncTraceset(LttvTracesetContext* const traceSetContext) { SyncState* syncState; struct timeval startTime, endTime; struct rusage startUsage, endUsage; GList* result; - FILE* graphsStream; - unsigned int i, j; + unsigned int i; int retval; if (!optionSync.present) { g_debug("Not synchronizing traceset because option is disabled"); - return; + return false; } if (optionSyncStats.present) @@ -187,7 +174,6 @@ void syncTraceset(LttvTracesetContext* const traceSetContext) // Initialize data structures syncState= malloc(sizeof(SyncState)); - syncState->traceNb= lttv_traceset_number(traceSetContext->ts); if (optionSyncStats.present) { @@ -198,42 +184,17 @@ void syncTraceset(LttvTracesetContext* const traceSetContext) syncState->stats= false; } - if (optionSyncGraphs.present) + if (!optionSyncNull.present && optionSyncGraphs.present) { - syncState->graphs= optionSyncGraphsDir.arg; + // Create the graph directory right away in case the module initialization + // functions have something to write in it. + syncState->graphsDir= optionSyncGraphsDir.arg; + syncState->graphsStream= createGraphsDir(syncState->graphsDir); } else { - syncState->graphs= NULL; - } - - graphsStream= NULL; - if (syncState->graphs) - { - char* cwd; - int graphsFp; - - // Create the graph directory right away in case the module initialization - // functions have something to write in it. - cwd= changeToGraphDir(syncState->graphs); - - if ((graphsFp= open("graphs.gnu", O_WRONLY | O_CREAT | O_TRUNC, S_IRUSR | - S_IWUSR | S_IXUSR | S_IRGRP | S_IWGRP | S_IXGRP | S_IROTH - | S_IWOTH | S_IXOTH)) == -1) - { - g_error(strerror(errno)); - } - if ((graphsStream= fdopen(graphsFp, "w")) == NULL) - { - g_error(strerror(errno)); - } - - retval= chdir(cwd); - if (retval == -1) - { - g_error(strerror(errno)); - } - free(cwd); + syncState->graphsStream= NULL; + syncState->graphsDir= NULL; } // Identify and initialize modules @@ -268,12 +229,12 @@ void syncTraceset(LttvTracesetContext* const traceSetContext) g_error("Analysis module '%s' not found", optionSyncAnalysis.arg); } + syncState->processingModule->initProcessing(syncState, traceSetContext); if (!optionSyncNull.present) { - syncState->analysisModule->initAnalysis(syncState); syncState->matchingModule->initMatching(syncState); + syncState->analysisModule->initAnalysis(syncState); } - syncState->processingModule->initProcessing(syncState, traceSetContext); // Process traceset lttv_process_traceset_seek_time(traceSetContext, ltt_time_zero); @@ -284,110 +245,20 @@ void syncTraceset(LttvTracesetContext* const traceSetContext) syncState->processingModule->finalizeProcessing(syncState); // Write graphs file - if (graphsStream != NULL) + if (!optionSyncNull.present && optionSyncGraphs.present) { - fprintf(graphsStream, - "#!/usr/bin/gnuplot\n\n" - "set terminal postscript eps color size 8in,6in\n"); + writeGraphsScript(syncState); - // Cover the upper triangular matrix, i is the reference node. - for (i= 0; i < syncState->traceNb; i++) - { - for (j= i + 1; j < syncState->traceNb; j++) - { - long pos1, pos2, trunc; - - fprintf(graphsStream, - "\nset output \"%03d-%03d.eps\"\n" - "plot \\\n", i, j); - - if (syncState->processingModule->writeProcessingGraphsPlots) - { - syncState->processingModule->writeProcessingGraphsPlots(graphsStream, - syncState, i, j); - } - if (syncState->matchingModule->writeMatchingGraphsPlots) - { - syncState->matchingModule->writeMatchingGraphsPlots(graphsStream, - syncState, i, j); - } - if (syncState->analysisModule->writeAnalysisGraphsPlots) - { - syncState->analysisModule->writeAnalysisGraphsPlots(graphsStream, - syncState, i, j); - } - - fflush(graphsStream); - pos2= ftell(graphsStream); - if (pos1 != pos2) - { - // Remove the ", \\\n" from the last graph plot line - trunc= pos2 - 4; - } - else - { - // Remove the "plot \\\n" line to avoid creating an invalid - // gnuplot script - trunc= pos2 - 7; - } - - if (ftruncate(fileno(graphsStream), trunc) == -1) - { - g_error(strerror(errno)); - } - if (fseek(graphsStream, 0, SEEK_END) == -1) - { - g_error(strerror(errno)); - } - - fprintf(graphsStream, - "\nset output \"%03d-%03d.eps\"\n" - "set title \"\"\n", i, j); - - if (syncState->processingModule->writeProcessingGraphsOptions) - { - syncState->processingModule->writeProcessingGraphsOptions(graphsStream, - syncState, i, j); - } - if (syncState->matchingModule->writeMatchingGraphsOptions) - { - syncState->matchingModule->writeMatchingGraphsOptions(graphsStream, - syncState, i, j); - } - if (syncState->analysisModule->writeAnalysisGraphsOptions) - { - syncState->analysisModule->writeAnalysisGraphsOptions(graphsStream, - syncState, i, j); - } - - if (pos1 != pos2) - { - fprintf(graphsStream, "replot\n"); - } - } - } - - if (fclose(graphsStream) != 0) + if (fclose(syncState->graphsStream) != 0) { g_error(strerror(errno)); } } - if (syncState->processingModule->printProcessingStats != NULL) - { - syncState->processingModule->printProcessingStats(syncState); - } - if (syncState->matchingModule->printMatchingStats != NULL) - { - syncState->matchingModule->printMatchingStats(syncState); - } - if (syncState->analysisModule->printAnalysisStats != NULL) + if (!optionSyncNull.present && optionSyncStats.present) { - syncState->analysisModule->printAnalysisStats(syncState); - } + printStats(syncState); - if (optionSyncStats.present) - { printf("Resulting synchronization factors:\n"); for (i= 0; i < syncState->traceNb; i++) { @@ -431,154 +302,8 @@ void syncTraceset(LttvTracesetContext* const traceSetContext) printf("\tsystem time: %ld.%06ld\n", endUsage.ru_stime.tv_sec, endUsage.ru_stime.tv_usec); } -} - -/* - * Calculate the elapsed time between two timeval values - * - * Args: - * end: end time, result is also stored in this structure - * start: start time - */ -void timeDiff(struct timeval* const end, const struct timeval* const start) -{ - if (end->tv_usec >= start->tv_usec) - { - end->tv_sec-= start->tv_sec; - end->tv_usec-= start->tv_usec; - } - else - { - end->tv_sec= end->tv_sec - start->tv_sec - 1; - end->tv_usec= end->tv_usec - start->tv_usec + 1e6; - } -} - - -/* - * A GCompareFunc for g_slist_find_custom() - * - * Args: - * a: ProcessingModule*, element's data - * b: char*, user data to compare against - * - * Returns: - * 0 if the processing module a's name is b - */ -gint gcfCompareProcessing(gconstpointer a, gconstpointer b) -{ - const ProcessingModule* processingModule; - const char* name; - - processingModule= (const ProcessingModule*) a; - name= (const char*) b; - - return strncmp(processingModule->name, name, - strlen(processingModule->name) + 1); -} - - -/* - * A GCompareFunc for g_slist_find_custom() - * - * Args: - * a: MatchingModule*, element's data - * b: char*, user data to compare against - * - * Returns: - * 0 if the matching module a's name is b - */ -gint gcfCompareMatching(gconstpointer a, gconstpointer b) -{ - const MatchingModule* matchingModule; - const char* name; - - matchingModule= (const MatchingModule*) a; - name= (const char*) b; - - return strncmp(matchingModule->name, name, strlen(matchingModule->name) + - 1); -} - - -/* - * A GCompareFunc for g_slist_find_custom() - * - * Args: - * a: AnalysisModule*, element's data - * b: char*, user data to compare against - * - * Returns: - * 0 if the analysis module a's name is b - */ -gint gcfCompareAnalysis(gconstpointer a, gconstpointer b) -{ - const AnalysisModule* analysisModule; - const char* name; - - analysisModule= (const AnalysisModule*) a; - name= (const char*) b; - - return strncmp(analysisModule->name, name, strlen(analysisModule->name) + - 1); -} - - -/* - * A GFunc for g_queue_foreach() - * - * Concatenate analysis module names. - * - * Args: - * data: AnalysisModule* - * user_data: GString*, concatenated names - */ -static void gfAppendAnalysisName(gpointer data, gpointer user_data) -{ - g_string_append((GString*) user_data, ((AnalysisModule*) data)->name); - g_string_append((GString*) user_data, ", "); -} - - -/* - * Change to the directory used to hold graphs. Create it if necessary. - * - * Args: - * graph: name of directory - * - * Returns: - * The current working directory before the execution of the function. The - * string must be free'd by the caller. - */ -char* changeToGraphDir(const char* const graphs) -{ - int retval; - char* cwd; - - cwd= getcwd(NULL, 0); - if (cwd == NULL) - { - g_error(strerror(errno)); - } - while ((retval= chdir(graphs)) != 0) - { - if (errno == ENOENT) - { - retval= mkdir(graphs, S_IRUSR | S_IWUSR | S_IXUSR | S_IRGRP | - S_IWGRP | S_IXGRP | S_IROTH | S_IWOTH | S_IXOTH); - if (retval != 0) - { - g_error(strerror(errno)); - } - } - else - { - g_error(strerror(errno)); - } - } - - return cwd; + return true; } @@ -591,18 +316,33 @@ char* changeToGraphDir(const char* const graphs) */ static void gfAddModuleOption(gpointer data, gpointer user_data) { - ModuleOption* option; + ModuleOption* option= data; LttvOptionType conversion[]= { [NO_ARG]= LTTV_OPT_NONE, + [OPTIONAL_ARG]= LTTV_OPT_NONE, [REQUIRED_ARG]= LTTV_OPT_STRING, }; + size_t fieldOffset[]= { + [NO_ARG]= offsetof(ModuleOption, present), + [REQUIRED_ARG]= offsetof(ModuleOption, arg), + }; + static const char* argHelpNone= "none"; g_assert_cmpuint(sizeof(conversion) / sizeof(*conversion), ==, HAS_ARG_COUNT); - option= (ModuleOption*) data; - lttv_option_add(option->longName, '\0', option->optionHelp, - option->argHelp ? option->argHelp : argHelpNone, - conversion[option->hasArg], &option->arg, NULL, NULL); + if (option->hasArg == OPTIONAL_ARG) + { + g_warning("Parameters with optional arguments not supported by the " + "lttv option scheme, parameter '%s' will not be available", + option->longName); + } + else + { + lttv_option_add(option->longName, '\0', option->optionHelp, + option->argHelp ? option->argHelp : argHelpNone, + conversion[option->hasArg], (void*) option + fieldOffset[option->hasArg], + NULL, NULL); + } }