amputate unused kCrashWithStats

src/internal_logging.cc

@@ -45,13 +45,6 @@
 #include "base/logging.h"
 #include "base/spinlock.h"              // for SpinLockHolder, SpinLock
 
-// Variables for storing crash output.  Allocated statically since we
-// may not be able to heap-allocate while crashing.
-static SpinLock crash_lock;
-static bool crashed = false;
-static const int kStatsBufferSize = 16 << 10;
-static char stats_buffer[kStatsBufferSize] = { 0 };
-
 namespace tcmalloc {
 
 static void WriteMessage(const char* msg, int length) {
@@ -100,20 +93,7 @@ void Log(LogMode mode, const char* filename, int line,
     return;
   }
 
-  bool first_crash = false;
-  {
-    SpinLockHolder l(&crash_lock);
-    if (!crashed) {
-      crashed = true;
-      first_crash = true;
-    }
-  }
-
   (*log_message_writer)(state.buf_, msglen);
-  if (first_crash && mode == kCrashWithStats) {
-    MallocExtension::instance()->GetStats(stats_buffer, kStatsBufferSize);
-    (*log_message_writer)(stats_buffer, strlen(stats_buffer));
-  }
 
   abort();
 }

src/internal_logging.h

@@ -55,7 +55,6 @@ namespace tcmalloc {
 enum LogMode {
   kLog,                       // Just print the message
   kCrash,                     // Print the message and crash
-  kCrashWithStats             // Print the message, some stats, and crash
 };
 
 class Logger;

src/tcmalloc.cc

@@ -146,7 +146,6 @@ using std::vector;
 
 using tcmalloc::kLog;
 using tcmalloc::kCrash;
-using tcmalloc::kCrashWithStats;
 using tcmalloc::Log;
 using tcmalloc::PageHeap;
 using tcmalloc::PageHeapAllocator;