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Diffstat (limited to 'toolkit/crashreporter/google-breakpad/src/processor/logging.h')
| -rw-r--r-- | toolkit/crashreporter/google-breakpad/src/processor/logging.h | 188 |
1 files changed, 188 insertions, 0 deletions
diff --git a/toolkit/crashreporter/google-breakpad/src/processor/logging.h b/toolkit/crashreporter/google-breakpad/src/processor/logging.h new file mode 100644 index 0000000000..43f3cfc951 --- /dev/null +++ b/toolkit/crashreporter/google-breakpad/src/processor/logging.h @@ -0,0 +1,188 @@ +// 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. + +// logging.h: Breakpad logging +// +// Breakpad itself uses Breakpad logging with statements of the form: +// BPLOG(severity) << "message"; +// severity may be INFO, ERROR, or other values defined in this file. +// +// BPLOG is an overridable macro so that users can customize Breakpad's +// logging. Left at the default, logging messages are sent to stderr along +// with a timestamp and the source code location that produced a message. +// The streams may be changed by redefining BPLOG_*_STREAM, the logging +// behavior may be changed by redefining BPLOG_*, and the entire logging +// system may be overridden by redefining BPLOG(severity). These +// redefinitions may be passed to the preprocessor as a command-line flag +// (-D). +// +// If an additional header is required to override Breakpad logging, it can +// be specified by the BP_LOGGING_INCLUDE macro. If defined, this header +// will #include the header specified by that macro. +// +// If any initialization is needed before logging, it can be performed by +// a function called through the BPLOG_INIT macro. Each main function of +// an executable program in the Breakpad processor library calls +// BPLOG_INIT(&argc, &argv); before any logging can be performed; define +// BPLOG_INIT appropriately if initialization is required. +// +// Author: Mark Mentovai + +#ifndef PROCESSOR_LOGGING_H__ +#define PROCESSOR_LOGGING_H__ + +#include <iostream> +#include <string> + +#include "common/using_std_string.h" +#include "google_breakpad/common/breakpad_types.h" + +#ifdef BP_LOGGING_INCLUDE +#include BP_LOGGING_INCLUDE +#endif // BP_LOGGING_INCLUDE + +namespace google_breakpad { + +// These are defined in Microsoft headers. +#ifdef SEVERITY_ERROR +#undef SEVERITY_ERROR +#endif + +#ifdef ERROR +#undef ERROR +#endif + +class LogStream { + public: + enum Severity { + SEVERITY_INFO, + SEVERITY_ERROR, + SEVERITY_CRITICAL + }; + + // Begin logging a message to the stream identified by |stream|, at the + // indicated severity. The file and line parameters should be set so as to + // identify the line of source code that is producing a message. + LogStream(std::ostream &stream, Severity severity, + const char *file, int line); + + // Finish logging by printing a newline and flushing the output stream. + ~LogStream(); + + template<typename T> std::ostream& operator<<(const T &t) { + return stream_ << t; + } + + private: + std::ostream &stream_; + + // Disallow copy constructor and assignment operator + explicit LogStream(const LogStream &that); + void operator=(const LogStream &that); +}; + +// This class is used to explicitly ignore values in the conditional logging +// macros. This avoids compiler warnings like "value computed is not used" +// and "statement has no effect". +class LogMessageVoidify { + public: + LogMessageVoidify() {} + + // This has to be an operator with a precedence lower than << but higher + // than ?: + void operator&(std::ostream &) {} +}; + +// Returns number formatted as a hexadecimal string, such as "0x7b". +string HexString(uint32_t number); +string HexString(uint64_t number); +string HexString(int number); + +// Returns the error code as set in the global errno variable, and sets +// error_string, a required argument, to a string describing that error +// code. +int ErrnoString(string *error_string); + +} // namespace google_breakpad + +#ifndef BPLOG_INIT +#define BPLOG_INIT(pargc, pargv) +#endif // BPLOG_INIT + +#ifndef BPLOG_LAZY_STREAM +#define BPLOG_LAZY_STREAM(stream, condition) \ + !(condition) ? (void) 0 : \ + google_breakpad::LogMessageVoidify() & (BPLOG_ ## stream) +#endif + +#ifndef BPLOG_MINIMUM_SEVERITY +#define BPLOG_MINIMUM_SEVERITY SEVERITY_INFO +#endif + +#define BPLOG_LOG_IS_ON(severity) \ + ((google_breakpad::LogStream::SEVERITY_ ## severity) >= \ + (google_breakpad::LogStream::BPLOG_MINIMUM_SEVERITY)) + +#ifndef BPLOG +#define BPLOG(severity) BPLOG_LAZY_STREAM(severity, BPLOG_LOG_IS_ON(severity)) +#endif // BPLOG + +#ifndef BPLOG_INFO +#ifndef BPLOG_INFO_STREAM +#define BPLOG_INFO_STREAM std::clog +#endif // BPLOG_INFO_STREAM +#define BPLOG_INFO google_breakpad::LogStream(BPLOG_INFO_STREAM, \ + google_breakpad::LogStream::SEVERITY_INFO, \ + __FILE__, __LINE__) +#endif // BPLOG_INFO + +#ifndef BPLOG_ERROR +#ifndef BPLOG_ERROR_STREAM +#define BPLOG_ERROR_STREAM std::cerr +#endif // BPLOG_ERROR_STREAM +#define BPLOG_ERROR google_breakpad::LogStream(BPLOG_ERROR_STREAM, \ + google_breakpad::LogStream::SEVERITY_ERROR, \ + __FILE__, __LINE__) +#endif // BPLOG_ERROR + +#ifndef BPLOG_CRITICAL +#ifndef BPLOG_CRITICAL_STREAM +#define BPLOG_CRITICAL_STREAM std::cerr +#endif // BPLOG_CRITICAL_STREAM +#define BPLOG_CRITICAL google_breakpad::LogStream(BPLOG_CRITICAL_STREAM, \ + google_breakpad::LogStream::SEVERITY_CRITICAL, \ + __FILE__, __LINE__) +#endif // BPLOG_CRITICAL + +#ifndef BPLOG_IF +#define BPLOG_IF(severity, condition) \ + BPLOG_LAZY_STREAM(severity, ((condition) && BPLOG_LOG_IS_ON(severity))) +#endif // BPLOG_IF + +#endif // PROCESSOR_LOGGING_H__ |