X-Git-Url: https://git.saurik.com/redis.git/blobdiff_plain/1507be5b01df4fcbaf42ca514a79b4b6c7f19d23..12a042f8635c5362332ca7a9b3eea66fdbfb6f08:/src/debug.c

diff --git a/src/debug.c b/src/debug.c
index 30fb0091..8d51e959 100644
--- a/src/debug.c
+++ b/src/debug.c
@@ -105,7 +105,6 @@ void computeDatasetDigest(unsigned char *final) {
 
             mixDigest(digest,key,sdslen(key));
 
-            /* Make sure the key is loaded if VM is active */
             o = dictGetVal(de);
 
             aux = htonl(o->type);
@@ -399,30 +398,31 @@ void bugReportStart(void) {
 
 #ifdef HAVE_BACKTRACE
 static void *getMcontextEip(ucontext_t *uc) {
-#if defined(__FreeBSD__)
-    return (void*) uc->uc_mcontext.mc_eip;
-#elif defined(__dietlibc__)
-    return (void*) uc->uc_mcontext.eip;
-#elif defined(__APPLE__) && !defined(MAC_OS_X_VERSION_10_6)
-  #if __x86_64__
+#if defined(__APPLE__) && !defined(MAC_OS_X_VERSION_10_6)
+    /* OSX < 10.6 */
+    #if defined(__x86_64__)
     return (void*) uc->uc_mcontext->__ss.__rip;
-  #elif __i386__
+    #elif defined(__i386__)
     return (void*) uc->uc_mcontext->__ss.__eip;
-  #else
+    #else
     return (void*) uc->uc_mcontext->__ss.__srr0;
-  #endif
+    #endif
 #elif defined(__APPLE__) && defined(MAC_OS_X_VERSION_10_6)
-  #if defined(_STRUCT_X86_THREAD_STATE64) && !defined(__i386__)
+    /* OSX >= 10.6 */
+    #if defined(_STRUCT_X86_THREAD_STATE64) && !defined(__i386__)
     return (void*) uc->uc_mcontext->__ss.__rip;
-  #else
+    #else
     return (void*) uc->uc_mcontext->__ss.__eip;
-  #endif
-#elif defined(__i386__)
+    #endif
+#elif defined(__linux__)
+    /* Linux */
+    #if defined(__i386__)
     return (void*) uc->uc_mcontext.gregs[14]; /* Linux 32 */
-#elif defined(__X86_64__) || defined(__x86_64__)
+    #elif defined(__X86_64__) || defined(__x86_64__)
     return (void*) uc->uc_mcontext.gregs[16]; /* Linux 64 */
-#elif defined(__ia64__) /* Linux IA64 */
+    #elif defined(__ia64__) /* Linux IA64 */
     return (void*) uc->uc_mcontext.sc_ip;
+    #endif
 #else
     return NULL;
 #endif
@@ -440,8 +440,11 @@ void logStackContent(void **sp) {
 
 void logRegisters(ucontext_t *uc) {
     redisLog(REDIS_WARNING, "--- REGISTERS");
+
+/* OSX */
 #if defined(__APPLE__) && defined(MAC_OS_X_VERSION_10_6)
-  #if defined(_STRUCT_X86_THREAD_STATE64) && !defined(__i386__)
+  /* OSX AMD64 */
+    #if defined(_STRUCT_X86_THREAD_STATE64) && !defined(__i386__)
     redisLog(REDIS_WARNING,
     "\n"
     "RAX:%016lx RBX:%016lx\nRCX:%016lx RDX:%016lx\n"
@@ -472,7 +475,8 @@ void logRegisters(ucontext_t *uc) {
         uc->uc_mcontext->__ss.__gs
     );
     logStackContent((void**)uc->uc_mcontext->__ss.__rsp);
-  #else
+    #else
+    /* OSX x86 */
     redisLog(REDIS_WARNING,
     "\n"
     "EAX:%08lx EBX:%08lx ECX:%08lx EDX:%08lx\n"
@@ -497,8 +501,11 @@ void logRegisters(ucontext_t *uc) {
         uc->uc_mcontext->__ss.__gs
     );
     logStackContent((void**)uc->uc_mcontext->__ss.__esp);
-  #endif
-#elif defined(__i386__)
+    #endif
+/* Linux */
+#elif defined(__linux__)
+    /* Linux x86 */
+    #if defined(__i386__)
     redisLog(REDIS_WARNING,
     "\n"
     "EAX:%08lx EBX:%08lx ECX:%08lx EDX:%08lx\n"
@@ -523,7 +530,8 @@ void logRegisters(ucontext_t *uc) {
         uc->uc_mcontext.gregs[0]
     );
     logStackContent((void**)uc->uc_mcontext.gregs[7]);
-#elif defined(__X86_64__) || defined(__x86_64__)
+    #elif defined(__X86_64__) || defined(__x86_64__)
+    /* Linux AMD64 */
     redisLog(REDIS_WARNING,
     "\n"
     "RAX:%016lx RBX:%016lx\nRCX:%016lx RDX:%016lx\n"
@@ -552,6 +560,7 @@ void logRegisters(ucontext_t *uc) {
         uc->uc_mcontext.gregs[18]
     );
     logStackContent((void**)uc->uc_mcontext.gregs[15]);
+    #endif
 #else
     redisLog(REDIS_WARNING,
         "  Dumping of registers not supported for this OS/arch");
@@ -559,10 +568,11 @@ void logRegisters(ucontext_t *uc) {
 }
 
 /* Logs the stack trace using the backtrace() call. */
-void logStackTrace(ucontext_t *uc) {
+sds getStackTrace(ucontext_t *uc) {
     void *trace[100];
     int i, trace_size = 0;
     char **messages = NULL;
+    sds st = sdsempty();
 
     /* Generate the stack trace */
     trace_size = backtrace(trace, 100);
@@ -572,9 +582,12 @@ void logStackTrace(ucontext_t *uc) {
         trace[1] = getMcontextEip(uc);
     }
     messages = backtrace_symbols(trace, trace_size);
-    redisLog(REDIS_WARNING, "--- STACK TRACE");
-    for (i=1; i<trace_size; ++i)
-        redisLog(REDIS_WARNING,"%s", messages[i]);
+    for (i=1; i<trace_size; ++i) {
+        st = sdscat(st,messages[i]);
+        st = sdscatlen(st,"\n",1);
+    }
+    zlibc_free(messages);
+    return st;
 }
 
 /* Log information about the "current" client, that is, the client that is
@@ -617,7 +630,7 @@ void logCurrentClient(void) {
 
 void sigsegvHandler(int sig, siginfo_t *info, void *secret) {
     ucontext_t *uc = (ucontext_t*) secret;
-    sds infostring, clients;
+    sds infostring, clients, st;
     struct sigaction act;
     REDIS_NOTUSED(info);
 
@@ -629,7 +642,9 @@ void sigsegvHandler(int sig, siginfo_t *info, void *secret) {
                         server.assert_file, server.assert_line);
 
     /* Log the stack trace */
-    logStackTrace(uc);
+    st = getStackTrace(uc);
+    redisLog(REDIS_WARNING, "--- STACK TRACE\n%s", st);
+    sdsfree(st);
 
     /* Log INFO and CLIENT LIST */
     redisLog(REDIS_WARNING, "--- INFO OUTPUT");
@@ -672,16 +687,24 @@ void sigsegvHandler(int sig, siginfo_t *info, void *secret) {
 #include <sys/time.h>
 
 void watchdogSignalHandler(int sig, siginfo_t *info, void *secret) {
+#ifdef HAVE_BACKTRACE
     ucontext_t *uc = (ucontext_t*) secret;
+#endif
     REDIS_NOTUSED(info);
     REDIS_NOTUSED(sig);
+    sds st, log;
 
-    /* Log INFO and CLIENT LIST */
-    redisLog(REDIS_WARNING, "--- WATCHDOG TIMER EXPIRED ---"); 
+    log = sdsnew("\n--- WATCHDOG TIMER EXPIRED ---\n");
 #ifdef HAVE_BACKTRACE
-    logStackTrace(uc);
-    redisLog(REDIS_WARNING, "------");
+    st = getStackTrace(uc);
+#else
+    st = sdsnew("Sorry: no support for backtrace().\n");
 #endif
+    log = sdscatsds(log,st);
+    log = sdscat(log,"------\n");
+    redisLogFromHandler(REDIS_WARNING,log);
+    sdsfree(st);
+    sdsfree(log);
 }
 
 /* Schedule a SIGALRM delivery after the specified period in milliseconds.