#include <errno.h>
#include <string.h>
#include <time.h>
+#include <iosfwd>
+#include <ostream>
+#include <sstream>
#include <string>
#if 0
# include <unistd.h>
#endif
-#ifdef __DEPRECATED
-// Make GCC quiet.
-# undef __DEPRECATED
-# include <strstream>
-# define __DEPRECATED
-#else
-# include <strstream>
-#endif
#include <vector>
// Annoying stuff for windows -- makes sure clients can import these functions
#ifndef GOOGLE_PREDICT_BRANCH_NOT_TAKEN
#if 0
#define GOOGLE_PREDICT_BRANCH_NOT_TAKEN(x) (__builtin_expect(x, 0))
+#define GOOGLE_PREDICT_FALSE(x) (__builtin_expect(x, 0))
+#define GOOGLE_PREDICT_TRUE(x) (__builtin_expect(!!(x), 1))
#else
#define GOOGLE_PREDICT_BRANCH_NOT_TAKEN(x) x
+#define GOOGLE_PREDICT_FALSE(x) x
+#define GOOGLE_PREDICT_TRUE(x) x
#endif
#endif
// Set whether log messages go to stderr in addition to logfiles.
DECLARE_bool(alsologtostderr);
+// Set color messages logged to stderr (if supported by terminal).
+DECLARE_bool(colorlogtostderr);
+
// Log messages at a level >= this flag are automatically sent to
// stderr in addition to log files.
DECLARE_int32(stderrthreshold);
namespace google {
-// Build the error message string.
-template<class t1, class t2>
-std::string* MakeCheckOpString(const t1& v1, const t2& v2, const char* names) {
- // It means that we cannot use stl_logging if compiler doesn't
- // support using expression for operator.
- // TODO(hamaji): Figure out a way to fix.
-#if 1
- using ::operator<<;
-#endif
- std::strstream ss;
- ss << names << " (" << v1 << " vs. " << v2 << ")";
- return new std::string(ss.str(), static_cast<unsigned int>(ss.pcount()));
+// This formats a value for a failing CHECK_XX statement. Ordinarily,
+// it uses the definition for operator<<, with a few special cases below.
+template <typename T>
+inline void MakeCheckOpValueString(std::ostream* os, const T& v) {
+ (*os) << v;
+}
+
+// Overrides for char types provide readable values for unprintable
+// characters.
+template <>
+void MakeCheckOpValueString(std::ostream* os, const char& v);
+template <>
+void MakeCheckOpValueString(std::ostream* os, const signed char& v);
+template <>
+void MakeCheckOpValueString(std::ostream* os, const unsigned char& v);
+
+// Build the error message string. Specify no inlining for code size.
+template <typename T1, typename T2>
+std::string* MakeCheckOpString(const T1& v1, const T2& v2, const char* exprtext)
+ ;
+
+namespace base {
+namespace internal {
+
+// If "s" is less than base_logging::INFO, returns base_logging::INFO.
+// If "s" is greater than base_logging::FATAL, returns
+// base_logging::ERROR. Otherwise, returns "s".
+LogSeverity NormalizeSeverity(LogSeverity s);
+
+} // namespace internal
+
+// A helper class for formatting "expr (V1 vs. V2)" in a CHECK_XX
+// statement. See MakeCheckOpString for sample usage. Other
+// approaches were considered: use of a template method (e.g.,
+// base::BuildCheckOpString(exprtext, base::Print<T1>, &v1,
+// base::Print<T2>, &v2), however this approach has complications
+// related to volatile arguments and function-pointer arguments).
+class CheckOpMessageBuilder {
+ public:
+ // Inserts "exprtext" and " (" to the stream.
+ explicit CheckOpMessageBuilder(const char *exprtext);
+ // Deletes "stream_".
+ ~CheckOpMessageBuilder();
+ // For inserting the first variable.
+ std::ostream* ForVar1() { return stream_; }
+ // For inserting the second variable (adds an intermediate " vs. ").
+ std::ostream* ForVar2();
+ // Get the result (inserts the closing ")").
+ std::string* NewString();
+
+ private:
+ std::ostringstream *stream_;
+};
+
+} // namespace base
+
+template <typename T1, typename T2>
+std::string* MakeCheckOpString(const T1& v1, const T2& v2, const char* exprtext) {
+ base::CheckOpMessageBuilder comb(exprtext);
+ MakeCheckOpValueString(comb.ForVar1(), v1);
+ MakeCheckOpValueString(comb.ForVar2(), v2);
+ return comb.NewString();
}
// Helper functions for CHECK_OP macro.
// will not instantiate the template version of the function on values of
// unnamed enum type - see comment below.
#define DEFINE_CHECK_OP_IMPL(name, op) \
- template <class t1, class t2> \
- inline std::string* Check##name##Impl(const t1& v1, const t2& v2, \
- const char* names) { \
- if (v1 op v2) return NULL; \
- else return MakeCheckOpString(v1, v2, names); \
+ template <typename T1, typename T2> \
+ inline std::string* name##Impl(const T1& v1, const T2& v2, \
+ const char* exprtext) { \
+ if (GOOGLE_PREDICT_TRUE(v1 op v2)) return NULL; \
+ else return MakeCheckOpString(v1, v2, exprtext); \
} \
- inline std::string* Check##name##Impl(int v1, int v2, const char* names) { \
- return Check##name##Impl<int, int>(v1, v2, names); \
+ inline std::string* name##Impl(int v1, int v2, const char* exprtext) { \
+ return name##Impl<int, int>(v1, v2, exprtext); \
}
-// Use _EQ, _NE, _LE, etc. in case the file including base/logging.h
-// provides its own #defines for the simpler names EQ, NE, LE, etc.
+// We use the full name Check_EQ, Check_NE, etc. in case the file including
+// base/logging.h provides its own #defines for the simpler names EQ, NE, etc.
// This happens if, for example, those are used as token names in a
// yacc grammar.
-DEFINE_CHECK_OP_IMPL(_EQ, ==)
-DEFINE_CHECK_OP_IMPL(_NE, !=)
-DEFINE_CHECK_OP_IMPL(_LE, <=)
-DEFINE_CHECK_OP_IMPL(_LT, < )
-DEFINE_CHECK_OP_IMPL(_GE, >=)
-DEFINE_CHECK_OP_IMPL(_GT, > )
+DEFINE_CHECK_OP_IMPL(Check_EQ, ==) // Compilation error with CHECK_EQ(NULL, x)?
+DEFINE_CHECK_OP_IMPL(Check_NE, !=) // Use CHECK(x == NULL) instead.
+DEFINE_CHECK_OP_IMPL(Check_LE, <=)
+DEFINE_CHECK_OP_IMPL(Check_LT, < )
+DEFINE_CHECK_OP_IMPL(Check_GE, >=)
+DEFINE_CHECK_OP_IMPL(Check_GT, > )
#undef DEFINE_CHECK_OP_IMPL
// Helper macro for binary operators.
#define VLOG_IF_EVERY_N(verboselevel, condition, n) \
LOG_IF_EVERY_N(INFO, (condition) && VLOG_IS_ON(verboselevel), n)
+namespace base_logging {
+
+// LogMessage::LogStream is a std::ostream backed by this streambuf.
+// This class ignores overflow and leaves two bytes at the end of the
+// buffer to allow for a '\n' and '\0'.
+class LogStreamBuf : public std::streambuf {
+ public:
+ // REQUIREMENTS: "len" must be >= 2 to account for the '\n' and '\n'.
+ LogStreamBuf(char *buf, int len) {
+ setp(buf, buf + len - 2);
+ }
+ // This effectively ignores overflow.
+ virtual int_type overflow(int_type ch) {
+ return ch;
+ }
+
+ // Legacy public ostrstream method.
+ size_t pcount() const { return pptr() - pbase(); }
+ char* pbase() const { return std::streambuf::pbase(); }
+};
+
+} // namespace base_logging
+
//
// This class more or less represents a particular log message. You
// create an instance of LogMessage and then stream stuff to it.
#ifdef _MSC_VER
# pragma warning(disable: 4275)
#endif
- class GOOGLE_GLOG_DLL_DECL LogStream : public std::ostrstream {
+ class GOOGLE_GLOG_DLL_DECL LogStream : public std::ostream {
#ifdef _MSC_VER
# pragma warning(default: 4275)
#endif
public:
- LogStream(char *buf, int len, int ctr_in)
- : ostrstream(buf, len),
- ctr_(ctr_in) {
- self_ = this;
+ LogStream(char *buf, int len, int ctr)
+ : std::ostream(NULL),
+ streambuf_(buf, len),
+ ctr_(ctr),
+ self_(this) {
+ rdbuf(&streambuf_);
}
int ctr() const { return ctr_; }
- void set_ctr(int ctr_in) { ctr_ = ctr_in; }
+ void set_ctr(int ctr) { ctr_ = ctr; }
LogStream* self() const { return self_; }
+ // Legacy std::streambuf methods.
+ size_t pcount() const { return streambuf_.pcount(); }
+ char* pbase() const { return streambuf_.pbase(); }
+ char* str() const { return pbase(); }
+
private:
+ base_logging::LogStreamBuf streambuf_;
int ctr_; // Counter hack (for the LOG_EVERY_X() macro)
LogStream *self_; // Consistency check hack
};
// Call abort() or similar to perform LOG(FATAL) crash.
static void Fail() ;
- std::ostream& stream() { return *(data_->stream_); }
+ std::ostream& stream();
- int preserved_errno() const { return data_->preserved_errno_; }
+ int preserved_errno() const;
// Must be called without the log_mutex held. (L < log_mutex)
static int64 num_messages(int severity);
+ struct LogMessageData;
+
private:
// Fully internal SendMethod cases:
void SendToSinkAndLog(); // Send to sink if provided and dispatch to the logs
// We keep the data in a separate struct so that each instance of
// LogMessage uses less stack space.
- struct GOOGLE_GLOG_DLL_DECL LogMessageData {
- LogMessageData() {};
-
- int preserved_errno_; // preserved errno
- char* buf_;
- char* message_text_; // Complete message text (points to selected buffer)
- LogStream* stream_alloc_;
- LogStream* stream_;
- char severity_; // What level is this LogMessage logged at?
- int line_; // line number where logging call is.
- void (LogMessage::*send_method_)(); // Call this in destructor to send
- union { // At most one of these is used: union to keep the size low.
- LogSink* sink_; // NULL or sink to send message to
- std::vector<std::string>* outvec_; // NULL or vector to push message onto
- std::string* message_; // NULL or string to write message into
- };
- time_t timestamp_; // Time of creation of LogMessage
- struct ::tm tm_time_; // Time of creation of LogMessage
- size_t num_prefix_chars_; // # of chars of prefix in this message
- size_t num_chars_to_log_; // # of chars of msg to send to log
- size_t num_chars_to_syslog_; // # of chars of msg to send to syslog
- const char* basename_; // basename of file that called LOG
- const char* fullname_; // fullname of file that called LOG
- bool has_been_flushed_; // false => data has not been flushed
- bool first_fatal_; // true => this was first fatal msg
-
- ~LogMessageData();
- private:
- LogMessageData(const LogMessageData&);
- void operator=(const LogMessageData&);
- };
-
- static LogMessageData fatal_msg_data_exclusive_;
- static LogMessageData fatal_msg_data_shared_;
-
LogMessageData* allocated_;
LogMessageData* data_;
}
-#undef GLOG_MSVC_PUSH_DISABLE_WARNING
-#undef GLOG_MSVC_POP_WARNING
-
#endif // _LOGGING_H_
projects / platform / upstream / glog.git / blobdiff