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Hari Krishna Sunder 2025-02-20 10:58:13 -08:00 committed by GitHub
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6
docs/logging.md
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@ -247,9 +247,11 @@ The wildcarding functionality 3. supports both `*` (matches 0 or more
characters) and `?` (matches any single character) wildcards. Please also refer characters) and `?` (matches any single character) wildcards. Please also refer
to [command line flags](flags.md) for more information. to [command line flags](flags.md) for more information.
You can dynamically control the level of a module using the `#!cpp SetVLOGLevel` function.
There's also `#!cpp VLOG_IS_ON(n)` "verbose level" condition macro. This macro There's also `#!cpp VLOG_IS_ON(n)` "verbose level" condition macro. This macro
returns `#!cpp true` when the `--v` is equal to or greater than `n`. The macro can be returns `#!cpp true` when the matching `--vmodule`, else `--v` is equal to or greater than `n`.
used as follows: The macro can be used as follows:
``` cpp ``` cpp
if (VLOG_IS_ON(2)) { if (VLOG_IS_ON(2)) {

8
src/glog/vlog_is_on.h
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@ -103,11 +103,9 @@ namespace google {
// Set VLOG(_IS_ON) level for module_pattern to log_level. // Set VLOG(_IS_ON) level for module_pattern to log_level.
// This lets us dynamically control what is normally set by the --vmodule flag. // This lets us dynamically control what is normally set by the --vmodule flag.
// Returns the level that previously applied to module_pattern. // Returns the level that previously applied to module_pattern.
// NOTE: To change the log level for VLOG(_IS_ON) sites // NOTE: All VLOG(_IS_ON) sites that have not matched any prior module_patterns
// that have already executed after/during InitGoogleLogging, // will be re-evaluated with the provided module_pattern. Sites that have
// one needs to supply the exact --vmodule pattern that applied to them. // already matched a different module_pattern will not be affected.
// (If no --vmodule pattern applied to them
// the value of FLAGS_v will continue to control them.)
extern GLOG_EXPORT int SetVLOGLevel(const char* module_pattern, int log_level); extern GLOG_EXPORT int SetVLOGLevel(const char* module_pattern, int log_level);
// Various declarations needed for VLOG_IS_ON above: ========================= // Various declarations needed for VLOG_IS_ON above: =========================