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GeezerVison is showing github.com — src: print backtrace on failed CHECK/ASSERT · nodejs/node@57cc4e3

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- node.cc
- util.h

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`‎src/node.cc‎`

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+25Lines changed: 25 additions & 0 deletions

Original file line number	Diff line number	Diff line change
`@@ -1795,6 +1795,31 @@ NO_RETURN void Abort() {`
`1795`	`1795`	`}`
`1796`	`1796`
`1797`	`1797`
	`1798`	`+NO_RETURN void Assert(const char* const (*args)[4]) {`
	`1799`	`+ auto filename = (*args)[0];`
	`1800`	`+ auto linenum = (*args)[1];`
	`1801`	`+ auto message = (*args)[2];`
	`1802`	`+ auto function = (*args)[3];`
	`1803`	`+`
	`1804`	`+ char exepath[256];`
	`1805`	`+ size_t exepath_size = sizeof(exepath);`
	`1806`	`+ if (uv_exepath(exepath, &exepath_size))`
	`1807`	`+ snprintf(exepath, sizeof(exepath), "node");`
	`1808`	`+`
	`1809`	`+ char pid[12] = {0};`
	`1810`	`+#ifndef _WIN32`
	`1811`	`+ snprintf(pid, sizeof(pid), "[%u]", getpid());`
	`1812`	`+#endif`
	`1813`	`+`
	`1814`	+ fprintf(stderr, "%s%s: %s:%s:%s%s Assertion `%s' failed.\n",
	`1815`	`+ exepath, pid, filename, linenum,`
	`1816`	`+ function, *function ? ":" : "", message);`
	`1817`	`+ fflush(stderr);`
	`1818`	`+`
	`1819`	`+ Abort();`
	`1820`	`+}`
	`1821`	`+`
	`1822`	`+`
`1798`	`1823`	`static void Abort(const FunctionCallbackInfo<Value>& args) {`
`1799`	`1824`	`Abort();`
`1800`	`1825`	`}`

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`‎src/util.h‎`

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+34-6Lines changed: 34 additions & 6 deletions

Original file line number	Diff line number	Diff line change
`@@ -25,7 +25,10 @@ namespace node {`
`25`	`25`	`#define NO_RETURN`
`26`	`26`	`#endif`
`27`	`27`
	`28`	`+// The slightly odd function signature for Assert() is to ease`
	`29`	`+// instruction cache pressure in calls from ASSERT and CHECK.`
`28`	`30`	`NO_RETURN void Abort();`
	`31`	`+NO_RETURN void Assert(const char* const (*args)[4]);`
`29`	`32`	`void DumpBacktrace(FILE* fp);`
`30`	`33`
`31`	`34`	`#ifdef __APPLE__`
`@@ -52,15 +55,40 @@ template <typename T> using remove_reference = std::remove_reference<T>;`
`52`	`55`
`53`	`56`	`#define ABORT() node::Abort()`
`54`	`57`
`55`		`-#if defined(NDEBUG)`
`56`		`-# define ASSERT(expression)`
`57`		`-# define CHECK(expression) \`
	`58`	`+#ifdef __GNUC__`
	`59`	`+#define LIKELY(expr) __builtin_expect(!!(expr), 1)`
	`60`	`+#define UNLIKELY(expr) __builtin_expect(!!(expr), 0)`
	`61`	`+#define PRETTY_FUNCTION_NAME __PRETTY_FUNCTION__`
	`62`	`+#else`
	`63`	`+#define LIKELY(expr) expr`
	`64`	`+#define UNLIKELY(expr) expr`
	`65`	`+#define PRETTY_FUNCTION_NAME ""`
	`66`	`+#endif`
	`67`	`+`
	`68`	`+#define STRINGIFY_(x) #x`
	`69`	`+#define STRINGIFY(x) STRINGIFY_(x)`
	`70`	`+`
	`71`	`+#define CHECK(expr) \`
`58`	`72`	`do { \`
`59`		`- if (!(expression)) ABORT(); \`
	`73`	`+ if (UNLIKELY(!(expr))) { \`
	`74`	`+ static const char* const args[] = { __FILE__, STRINGIFY(__LINE__), \`
	`75`	`+ #expr, PRETTY_FUNCTION_NAME }; \`
	`76`	`+ node::Assert(&args); \`
	`77`	`+ } \`
`60`	`78`	`} while (0)`
	`79`	`+`
	`80`	`+// FIXME(bnoordhuis) cctests don't link in node::Abort() and node::Assert().`
	`81`	`+#ifdef GTEST_DONT_DEFINE_ASSERT_EQ`
	`82`	`+#undef ABORT`
	`83`	`+#undef CHECK`
	`84`	`+#define ABORT ABORT_NO_BACKTRACE`
	`85`	`+#define CHECK assert`
	`86`	`+#endif`
	`87`	`+`
	`88`	`+#ifdef NDEBUG`
	`89`	`+#define ASSERT(expr)`
`61`	`90`	`#else`
`62`		`-# define ASSERT(expression) assert(expression)`
`63`		`-# define CHECK(expression) assert(expression)`
	`91`	`+#define ASSERT(expr) CHECK(expr)`
`64`	`92`	`#endif`
`65`	`93`
`66`	`94`	`#define ASSERT_EQ(a, b) ASSERT((a) == (b))`

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