// Copyright (c) 2007, 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
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// ---
// This file just provides storage for FLAGS_verbose.
#include <config.h>
#include "base/logging.h"
#include "base/commandlineflags.h"
DEFINE_int32(verbose, EnvToInt("PERFTOOLS_VERBOSE", 0),
"Set to numbers >0 for more verbose output, or <0 for less. "
"--verbose == -4 means we log fatal errors only.");
#if defined(_WIN32) || defined(__CYGWIN__) || defined(__CYGWIN32__)
// While windows does have a POSIX-compatible API
// (_open/_write/_close), it acquires memory. Using this lower-level
// windows API is the closest we can get to being "raw".
RawFD RawOpenForWriting(const char* filename) {
// CreateFile allocates memory if file_name isn't absolute, so if
// that ever becomes a problem then we ought to compute the absolute
// path on its behalf (perhaps the ntdll/kernel function isn't aware
// of the working directory?)
RawFD fd = CreateFileA(filename, GENERIC_WRITE, 0, NULL,
CREATE_ALWAYS, 0, NULL);
if (fd != kIllegalRawFD && GetLastError() == ERROR_ALREADY_EXISTS)
SetEndOfFile(fd); // truncate the existing file
return fd;
}
void RawWrite(RawFD handle, const char* buf, size_t len) {
while (len > 0) {
DWORD wrote;
BOOL ok = WriteFile(handle, buf, len, &wrote, NULL);
// We do not use an asynchronous file handle, so ok==false means an error
if (!ok) break;
buf += wrote;
len -= wrote;
}
}
void RawClose(RawFD handle) {
CloseHandle(handle);
}
#else // _WIN32 || __CYGWIN__ || __CYGWIN32__
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef HAVE_FCNTL_H
#include <fcntl.h>
#endif
// Re-run fn until it doesn't cause EINTR.
#define NO_INTR(fn) do {} while ((fn) < 0 && errno == EINTR)
RawFD RawOpenForWriting(const char* filename) {
return open(filename, O_WRONLY|O_CREAT|O_TRUNC, 0664);
}
void RawWrite(RawFD fd, const char* buf, size_t len) {
while (len > 0) {
ssize_t r;
NO_INTR(r = write(fd, buf, len));
if (r <= 0) break;
buf += r;
len -= r;
}
}
void RawClose(RawFD fd) {
NO_INTR(close(fd));
}
#endif // _WIN32 || __CYGWIN__ || __CYGWIN32__