// 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__