Merge google-perftools r109 (the current contents of third_party/tcmalloc/vendor)

third_party/tcmalloc/chromium/src/base/logging.h

 // Copyright (c) 2005, Google Inc.
 // All rights reserved.
 // 
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 // 
 //     * Redistributions of source code must retain the above copyright
 // notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
@@ skipping 31 matching lines @@
 #ifdef HAVE_UNISTD_H
 #include <unistd.h>    // for write()
 #endif
 #include <string.h>    // for strlen(), strcmp()
 #include <assert.h>
 #include <errno.h>     // for errno
 #include "base/commandlineflags.h"
 
 // On some systems (like freebsd), we can't call write() at all in a
 // global constructor, perhaps because errno hasn't been set up.
+// (In windows, we can't call it because it might call malloc.)
 // Calling the write syscall is safer (it doesn't set errno), so we
 // prefer that.  Note we don't care about errno for logging: we just
 // do logging on a best-effort basis.
-#ifdef HAVE_SYS_SYSCALL_H
+#if defined(_MSC_VER)
+#define WRITE_TO_STDERR(buf, len) WriteToStderr(buf, len);  // in port.cc
+#elif defined(HAVE_SYS_SYSCALL_H)
 #include <sys/syscall.h>
 #define WRITE_TO_STDERR(buf, len) syscall(SYS_write, STDERR_FILENO, buf, len)
 #else
 #define WRITE_TO_STDERR(buf, len) write(STDERR_FILENO, buf, len)
 #endif
 
+// MSVC and mingw define their own, safe version of vnsprintf (the
+// windows one in broken) in port.cc.  Everyone else can use the
+// version here.  We had to give it a unique name for windows.
+#ifndef _WIN32
+# define perftools_vsnprintf vsnprintf
+#endif
+
 
 // We log all messages at this log-level and below.
 // INFO == -1, WARNING == -2, ERROR == -3, FATAL == -4
 DECLARE_int32(verbose);
 
 // CHECK dies with a fatal error if condition is not true.  It is *not*
 // controlled by NDEBUG, so the check will be executed regardless of
 // compilation mode.  Therefore, it is safe to do things like:
 //    CHECK(fp->Write(x) == 4)
 // Note we use write instead of printf/puts to avoid the risk we'll
@@ skipping 109 matching lines @@
 #ifdef ERROR
 #undef ERROR      // may conflict with ERROR macro on windows
 #endif
 enum LogSeverity {INFO = -1, WARNING = -2, ERROR = -3, FATAL = -4};
 
 // NOTE: we add a newline to the end of the output if it's not there already
 inline void LogPrintf(int severity, const char* pat, va_list ap) {
   // We write directly to the stderr file descriptor and avoid FILE
   // buffering because that may invoke malloc()
   char buf[1600];
-  vsnprintf(buf, sizeof(buf)-1, pat, ap);
+  perftools_vsnprintf(buf, sizeof(buf)-1, pat, ap);
   if (buf[0] != '\0' && buf[strlen(buf)-1] != '\n') {
     assert(strlen(buf)+1 < sizeof(buf));
     strcat(buf, "\n");
   }
   WRITE_TO_STDERR(buf, strlen(buf));
   if ((severity) == FATAL)
     abort(); // LOG(FATAL) indicates a big problem, so don't run atexit() calls
 }
 
 // Note that since the order of global constructors is unspecified,
@@ skipping 21 matching lines @@
 }
 
 // This isn't technically logging, but it's also IO and also is an
 // attempt to be "raw" -- that is, to not use any higher-level libc
 // routines that might allocate memory or (ideally) try to allocate
 // locks.  We use an opaque file handle (not necessarily an int)
 // to allow even more low-level stuff in the future.
 // Like other "raw" routines, these functions are best effort, and
 // thus don't return error codes (except RawOpenForWriting()).
 #if defined(_WIN32) || defined(__CYGWIN__) || defined(__CYGWIN32__)
+#ifndef NOMINMAX
+#define NOMINMAX     // @#!$& windows
+#endif
 #include <windows.h>
 typedef HANDLE RawFD;
 const RawFD kIllegalRawFD = INVALID_HANDLE_VALUE;
 #else
 typedef int RawFD;
 const RawFD kIllegalRawFD = -1;   // what open returns if it fails
 #endif  // defined(_WIN32) || defined(__CYGWIN__) || defined(__CYGWIN32__)
 
 RawFD RawOpenForWriting(const char* filename);   // uses default permissions
 void RawWrite(RawFD fd, const char* buf, size_t len);
 void RawClose(RawFD fd);
 
 #endif // _LOGGING_H_