diff options
Diffstat (limited to 'third_party/glog/src/vlog_is_on.cc')
| -rw-r--r-- | third_party/glog/src/vlog_is_on.cc | 257 |
1 files changed, 0 insertions, 257 deletions
diff --git a/third_party/glog/src/vlog_is_on.cc b/third_party/glog/src/vlog_is_on.cc deleted file mode 100644 index e8fdbae7dc..0000000000 --- a/third_party/glog/src/vlog_is_on.cc +++ /dev/null @@ -1,257 +0,0 @@ -// Copyright (c) 1999, 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. -// -// Author: Ray Sidney and many others -// -// Broken out from logging.cc by Soren Lassen -// logging_unittest.cc covers the functionality herein - -#include "utilities.h" - -#include <string.h> -#include <stdlib.h> -#include <errno.h> -#include <cstdio> -#include <string> -#include "base/commandlineflags.h" -#include "glog/logging.h" -#include "glog/raw_logging.h" -#include "base/googleinit.h" - -// glog doesn't have annotation -#define ANNOTATE_BENIGN_RACE(address, description) - -using std::string; - -GLOG_DEFINE_int32(v, 0, "Show all VLOG(m) messages for m <= this." -" Overridable by --vmodule."); - -GLOG_DEFINE_string(vmodule, "", "per-module verbose level." -" Argument is a comma-separated list of <module name>=<log level>." -" <module name> is a glob pattern, matched against the filename base" -" (that is, name ignoring .cc/.h./-inl.h)." -" <log level> overrides any value given by --v."); - -_START_GOOGLE_NAMESPACE_ - -namespace glog_internal_namespace_ { - -// Used by logging_unittests.cc so can't make it static here. -GOOGLE_GLOG_DLL_DECL bool SafeFNMatch_(const char* pattern, - size_t patt_len, - const char* str, - size_t str_len); - -// Implementation of fnmatch that does not need 0-termination -// of arguments and does not allocate any memory, -// but we only support "*" and "?" wildcards, not the "[...]" patterns. -// It's not a static function for the unittest. -GOOGLE_GLOG_DLL_DECL bool SafeFNMatch_(const char* pattern, - size_t patt_len, - const char* str, - size_t str_len) { - size_t p = 0; - size_t s = 0; - while (1) { - if (p == patt_len && s == str_len) return true; - if (p == patt_len) return false; - if (s == str_len) return p+1 == patt_len && pattern[p] == '*'; - if (pattern[p] == str[s] || pattern[p] == '?') { - p += 1; - s += 1; - continue; - } - if (pattern[p] == '*') { - if (p+1 == patt_len) return true; - do { - if (SafeFNMatch_(pattern+(p+1), patt_len-(p+1), str+s, str_len-s)) { - return true; - } - s += 1; - } while (s != str_len); - return false; - } - return false; - } -} - -} // namespace glog_internal_namespace_ - -using glog_internal_namespace_::SafeFNMatch_; - -int32 kLogSiteUninitialized = 1000; - -// List of per-module log levels from FLAGS_vmodule. -// Once created each element is never deleted/modified -// except for the vlog_level: other threads will read VModuleInfo blobs -// w/o locks and we'll store pointers to vlog_level at VLOG locations -// that will never go away. -// We can't use an STL struct here as we wouldn't know -// when it's safe to delete/update it: other threads need to use it w/o locks. -struct VModuleInfo { - string module_pattern; - mutable int32 vlog_level; // Conceptually this is an AtomicWord, but it's - // too much work to use AtomicWord type here - // w/o much actual benefit. - const VModuleInfo* next; -}; - -// This protects the following global variables. -static Mutex vmodule_lock; -// Pointer to head of the VModuleInfo list. -// It's a map from module pattern to logging level for those module(s). -static VModuleInfo* vmodule_list = 0; -// Boolean initialization flag. -static bool inited_vmodule = false; - -// L >= vmodule_lock. -static void VLOG2Initializer() { - vmodule_lock.AssertHeld(); - // Can now parse --vmodule flag and initialize mapping of module-specific - // logging levels. - inited_vmodule = false; - const char* vmodule = FLAGS_vmodule.c_str(); - const char* sep; - VModuleInfo* head = NULL; - VModuleInfo* tail = NULL; - while ((sep = strchr(vmodule, '=')) != NULL) { - string pattern(vmodule, sep - vmodule); - int module_level; - if (sscanf(sep, "=%d", &module_level) == 1) { - VModuleInfo* info = new VModuleInfo; - info->module_pattern = pattern; - info->vlog_level = module_level; - if (head) tail->next = info; - else head = info; - tail = info; - } - // Skip past this entry - vmodule = strchr(sep, ','); - if (vmodule == NULL) break; - vmodule++; // Skip past "," - } - if (head) { // Put them into the list at the head: - tail->next = vmodule_list; - vmodule_list = head; - } - inited_vmodule = true; -} - -// This can be called very early, so we use SpinLock and RAW_VLOG here. -int SetVLOGLevel(const char* module_pattern, int log_level) { - int result = FLAGS_v; - int const pattern_len = strlen(module_pattern); - bool found = false; - { - MutexLock l(&vmodule_lock); // protect whole read-modify-write - for (const VModuleInfo* info = vmodule_list; - info != NULL; info = info->next) { - if (info->module_pattern == module_pattern) { - if (!found) { - result = info->vlog_level; - found = true; - } - info->vlog_level = log_level; - } else if (!found && - SafeFNMatch_(info->module_pattern.c_str(), - info->module_pattern.size(), - module_pattern, pattern_len)) { - result = info->vlog_level; - found = true; - } - } - if (!found) { - VModuleInfo* info = new VModuleInfo; - info->module_pattern = module_pattern; - info->vlog_level = log_level; - info->next = vmodule_list; - vmodule_list = info; - } - } - RAW_VLOG(1, "Set VLOG level for \"%s\" to %d", module_pattern, log_level); - return result; -} - -// NOTE: Individual VLOG statements cache the integer log level pointers. -// NOTE: This function must not allocate memory or require any locks. -bool InitVLOG3__(int32** site_flag, int32* site_default, - const char* fname, int32 verbose_level) { - MutexLock l(&vmodule_lock); - bool read_vmodule_flag = inited_vmodule; - if (!read_vmodule_flag) { - VLOG2Initializer(); - } - - // protect the errno global in case someone writes: - // VLOG(..) << "The last error was " << strerror(errno) - int old_errno = errno; - - // site_default normally points to FLAGS_v - int32* site_flag_value = site_default; - - // Get basename for file - const char* base = strrchr(fname, '/'); - base = base ? (base+1) : fname; - const char* base_end = strchr(base, '.'); - size_t base_length = base_end ? size_t(base_end - base) : strlen(base); - - // Trim out trailing "-inl" if any - if (base_length >= 4 && (memcmp(base+base_length-4, "-inl", 4) == 0)) { - base_length -= 4; - } - - // TODO: Trim out _unittest suffix? Perhaps it is better to have - // the extra control and just leave it there. - - // find target in vector of modules, replace site_flag_value with - // a module-specific verbose level, if any. - for (const VModuleInfo* info = vmodule_list; - info != NULL; info = info->next) { - if (SafeFNMatch_(info->module_pattern.c_str(), info->module_pattern.size(), - base, base_length)) { - site_flag_value = &info->vlog_level; - // value at info->vlog_level is now what controls - // the VLOG at the caller site forever - break; - } - } - - // Cache the vlog value pointer if --vmodule flag has been parsed. - ANNOTATE_BENIGN_RACE(site_flag, - "*site_flag may be written by several threads," - " but the value will be the same"); - if (read_vmodule_flag) *site_flag = site_flag_value; - - // restore the errno in case something recoverable went wrong during - // the initialization of the VLOG mechanism (see above note "protect the..") - errno = old_errno; - return *site_flag_value >= verbose_level; -} - -_END_GOOGLE_NAMESPACE_ |