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Unified Diff: src/platform-freebsd.cc

Issue 18431004: Common implementation of OS::DumpBacktrace() and OS::StackWalk(). (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Templatized POSIX backtrace Created 7 years, 5 months ago
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Index: src/platform-freebsd.cc
diff --git a/src/platform-freebsd.cc b/src/platform-freebsd.cc
index 210ccb1796155f4b04bf96fab4a8b735813913dd..c771cd3be029aea168a1333a57a5481690354518 100644
--- a/src/platform-freebsd.cc
+++ b/src/platform-freebsd.cc
@@ -196,27 +196,7 @@ void OS::DebugBreak() {
void OS::DumpBacktrace() {
- void* trace[100];
- int size = backtrace(trace, ARRAY_SIZE(trace));
- char** symbols = backtrace_symbols(trace, size);
- fprintf(stderr, "\n==== C stack trace ===============================\n\n");
- if (size == 0) {
- fprintf(stderr, "(empty)\n");
- } else if (symbols == NULL) {
- fprintf(stderr, "(no symbols)\n");
- } else {
- for (int i = 1; i < size; ++i) {
- fprintf(stderr, "%2d: ", i);
- char mangled[201];
- if (sscanf(symbols[i], "%*[^(]%*[(]%200[^)+]", mangled) == 1) { // NOLINT
- fprintf(stderr, "%s\n", mangled);
- } else {
- fprintf(stderr, "??\n");
- }
- }
- }
- fflush(stderr);
- free(symbols);
+ POSIXBacktraceHelper<backtrace, backtrace_symbols>::DumpBacktrace();
}
@@ -318,30 +298,7 @@ void OS::SignalCodeMovingGC() {
int OS::StackWalk(Vector<OS::StackFrame> frames) {
- int frames_size = frames.length();
- ScopedVector<void*> addresses(frames_size);
-
- int frames_count = backtrace(addresses.start(), frames_size);
-
- char** symbols = backtrace_symbols(addresses.start(), frames_count);
- if (symbols == NULL) {
- return kStackWalkError;
- }
-
- for (int i = 0; i < frames_count; i++) {
- frames[i].address = addresses[i];
- // Format a text representation of the frame based on the information
- // available.
- SNPrintF(MutableCStrVector(frames[i].text, kStackWalkMaxTextLen),
- "%s",
- symbols[i]);
- // Make sure line termination is in place.
- frames[i].text[kStackWalkMaxTextLen - 1] = '\0';
- }
-
- free(symbols);
-
- return frames_count;
+ return POSIXBacktraceHelper<backtrace, backtrace_symbols>::StackWalk(frames);
}
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