diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/libstrongswan/utils/leak_detective.c | 186 |
1 files changed, 98 insertions, 88 deletions
diff --git a/src/libstrongswan/utils/leak_detective.c b/src/libstrongswan/utils/leak_detective.c index b1b58ccba..8497a1cd8 100644 --- a/src/libstrongswan/utils/leak_detective.c +++ b/src/libstrongswan/utils/leak_detective.c @@ -149,6 +149,37 @@ static memory_header_t first_header = { static bool installed = FALSE; /** + * Installs the malloc hooks, enables leak detection + */ +static void install_hooks() +{ + if (!installed) + { + old_malloc_hook = __malloc_hook; + old_realloc_hook = __realloc_hook; + old_free_hook = __free_hook; + __malloc_hook = malloc_hook; + __realloc_hook = realloc_hook; + __free_hook = free_hook; + installed = TRUE; + } +} + +/** + * Uninstalls the malloc hooks, disables leak detection + */ +static void uninstall_hooks() +{ + if (installed) + { + __malloc_hook = old_malloc_hook; + __free_hook = old_free_hook; + __realloc_hook = old_realloc_hook; + installed = FALSE; + } +} + +/** * Leak report white list * * List of functions using static allocation buffers or should be suppressed @@ -237,79 +268,6 @@ char *whitelist[] = { "gnutls_global_init", }; -METHOD(leak_detective_t, report, void, - private_leak_detective_t *this, bool detailed) -{ - if (lib->leak_detective) - { - memory_header_t *hdr; - int leaks = 0, whitelisted = 0; - - for (hdr = first_header.next; hdr != NULL; hdr = hdr->next) - { - if (hdr->backtrace->contains_function(hdr->backtrace, - whitelist, countof(whitelist))) - { - whitelisted++; - } - else - { - fprintf(stderr, "Leak (%d bytes at %p):\n", hdr->bytes, hdr + 1); - /* skip the first frame, contains leak detective logic */ - hdr->backtrace->log(hdr->backtrace, stderr, detailed); - leaks++; - } - } - switch (leaks) - { - case 0: - fprintf(stderr, "No leaks detected"); - break; - case 1: - fprintf(stderr, "One leak detected"); - break; - default: - fprintf(stderr, "%d leaks detected", leaks); - break; - } - fprintf(stderr, ", %d suppressed by whitelist\n", whitelisted); - } - else - { - fprintf(stderr, "Leak detective disabled\n"); - } -} - -/** - * Installs the malloc hooks, enables leak detection - */ -static void install_hooks() -{ - if (!installed) - { - old_malloc_hook = __malloc_hook; - old_realloc_hook = __realloc_hook; - old_free_hook = __free_hook; - __malloc_hook = malloc_hook; - __realloc_hook = realloc_hook; - __free_hook = free_hook; - installed = TRUE; - } -} - -/** - * Uninstalls the malloc hooks, disables leak detection - */ -static void uninstall_hooks() -{ - if (installed) - { - __malloc_hook = old_malloc_hook; - __free_hook = old_free_hook; - __realloc_hook = old_realloc_hook; - installed = FALSE; - } -} /** * Hashtable hash function @@ -338,12 +296,13 @@ static bool equals(backtrace_t *a, backtrace_t *b) return a->equals(a, b); } -METHOD(leak_detective_t, usage, void, - private_leak_detective_t *this, FILE *out) +/** + * Summarize and print backtraces + */ +static int print_traces(private_leak_detective_t *this, + FILE *out, int thresh, bool detailed, int *whitelisted) { - int oldpolicy, thresh; - pthread_t thread_id = pthread_self(); - struct sched_param oldparams, params; + int leaks = 0; memory_header_t *hdr; enumerator_t *enumerator; hashtable_t *entries; @@ -356,19 +315,19 @@ METHOD(leak_detective_t, usage, void, u_int count; } *entry; - thresh = lib->settings->get_int(lib->settings, - "libstrongswan.leak_detective.usage_threshold", 10240); - - pthread_getschedparam(thread_id, &oldpolicy, &oldparams); - params.__sched_priority = sched_get_priority_max(SCHED_FIFO); - pthread_setschedparam(thread_id, SCHED_FIFO, ¶ms); uninstall_hooks(); entries = hashtable_create((hashtable_hash_t)hash, (hashtable_equals_t)equals, 1024); - for (hdr = first_header.next; hdr != NULL; hdr = hdr->next) { + if (whitelisted && + hdr->backtrace->contains_function(hdr->backtrace, + whitelist, countof(whitelist))) + { + (*whitelisted)++; + continue; + } entry = entries->get(entries, hdr->backtrace); if (entry) { @@ -384,15 +343,16 @@ METHOD(leak_detective_t, usage, void, ); entries->put(entries, hdr->backtrace, entry); } + leaks++; } enumerator = entries->create_enumerator(entries); while (enumerator->enumerate(enumerator, NULL, &entry)) { - if (entry->bytes >= thresh) + if (!thresh || entry->bytes >= thresh) { - fprintf(out, "%d bytes total, %d allocations, %d bytes average:\n", + fprintf(out, "%d bytes total, %d allocations, %d bytes average:\n", entry->bytes, entry->count, entry->bytes / entry->count); - entry->backtrace->log(entry->backtrace, out, TRUE); + entry->backtrace->log(entry->backtrace, out, detailed); } free(entry); } @@ -400,6 +360,56 @@ METHOD(leak_detective_t, usage, void, entries->destroy(entries); install_hooks(); + return leaks; +} + +METHOD(leak_detective_t, report, void, + private_leak_detective_t *this, bool detailed) +{ + if (lib->leak_detective) + { + int leaks = 0, whitelisted = 0; + + leaks = print_traces(this, stderr, 0, detailed, &whitelisted); + switch (leaks) + { + case 0: + fprintf(stderr, "No leaks detected"); + break; + case 1: + fprintf(stderr, "One leak detected"); + break; + default: + fprintf(stderr, "%d leaks detected", leaks); + break; + } + fprintf(stderr, ", %d suppressed by whitelist\n", whitelisted); + } + else + { + fprintf(stderr, "Leak detective disabled\n"); + } +} + +METHOD(leak_detective_t, usage, void, + private_leak_detective_t *this, FILE *out) +{ + int oldpolicy, thresh; + bool detailed; + pthread_t thread_id = pthread_self(); + struct sched_param oldparams, params; + + thresh = lib->settings->get_int(lib->settings, + "libstrongswan.leak_detective.usage_threshold", 10240); + detailed = lib->settings->get_bool(lib->settings, + "libstrongswan.leak_detective.detailed", TRUE); + + pthread_getschedparam(thread_id, &oldpolicy, &oldparams); + params.__sched_priority = sched_get_priority_max(SCHED_FIFO); + pthread_setschedparam(thread_id, SCHED_FIFO, ¶ms); + + print_traces(this, out, thresh, detailed, NULL); + pthread_setschedparam(thread_id, oldpolicy, &oldparams); } |