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https://github.com/fluencelabs/redis
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initial commit print stack trace
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parent
0939d0ea39
commit
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50
redis.c
50
redis.c
@ -36,7 +36,10 @@
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#include <string.h>
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#include <time.h>
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#include <unistd.h>
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#define __USE_POSIX199309
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#include <signal.h>
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#include <execinfo.h>
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#include <ucontext.h>
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#include <sys/wait.h>
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#include <errno.h>
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#include <assert.h>
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@ -51,6 +54,7 @@
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#include <limits.h>
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#include <execinfo.h>
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#include "redis.h"
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#include "ae.h" /* Event driven programming library */
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#include "sds.h" /* Dynamic safe strings */
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#include "anet.h" /* Networking the easy way */
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@ -167,6 +171,12 @@
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/* Anti-warning macro... */
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#define REDIS_NOTUSED(V) ((void) V)
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int die() {
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char *err = NULL;
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sprintf(err, "gonner");
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return 0;
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}
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/*================================= Data types ============================== */
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@ -1594,7 +1604,8 @@ static robj *createListObject(void) {
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static robj *createSetObject(void) {
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dict *d = dictCreate(&setDictType,NULL);
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if (!d) oom("dictCreate");
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return createObject(REDIS_SET,d);
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die();
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return createObject(REDIS_SET,d);
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}
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static void freeStringObject(robj *o) {
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@ -4123,7 +4134,44 @@ static void daemonize(void) {
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}
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}
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static void segvHandler (int sig, siginfo_t *info, void *secret) {
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void *trace[16];
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char **messages = (char **)NULL;
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int i, trace_size = 0;
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ucontext_t *uc = (ucontext_t *)secret;
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/* Do something useful with siginfo_t */
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if (sig == SIGSEGV)
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printf("Got signal %d, faulty address is %p, from %p\n", sig, info->si_addr,
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(void *)uc->uc_mcontext.gregs[REG_EIP]);
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else
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printf("Got signal %d\n", sig);
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trace_size = backtrace(trace, 16);
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/* overwrite sigaction with caller's address */
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trace[1] = (void *) uc->uc_mcontext.gregs[REG_EIP];
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messages = backtrace_symbols(trace, trace_size);
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/* skip first stack frame (points here) */
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printf("[bt] Execution path:\n");
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for (i=1; i<trace_size; ++i)
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printf("[bt] %s\n", messages[i]);
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exit(0);
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}
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void setupSigAction(){
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struct sigaction act;
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sigemptyset (&act.sa_mask);
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/* When the SA_SIGINFO flag is set in sa_flags then sa_sigaction is used. Otherwise, sa_handler is used */
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act.sa_flags = SA_NODEFER | SA_ONSTACK | SA_RESETHAND | SA_SIGINFO;
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act.sa_sigaction = segvHandler;
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sigaction (SIGSEGV, &act, NULL);
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}
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int main(int argc, char **argv) {
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setupSigAction();
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#ifdef __linux__
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linuxOvercommitMemoryWarning();
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#endif
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