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| author |  Derek Mauro <dmauro@google.com> | 2023-12-05 07:07:07 -0800 |
|---|---|---|
| committer |  Copybara-Service <copybara-worker@google.com> | 2023-12-05 07:07:49 -0800 |
| commit | 7b6c17e378224844d8663a410da2da5353b205b9 (patch) | |
| tree | 2f2b43000c977e65ce226cd04f13fdd389a7a0b6 /absl/log/internal | |
| parent | a39d71a80fbdf0ee2f00222943c1ca08361cec20 (diff) | |
Add VLOG and friends
These are methods for configurable verbose logging
PiperOrigin-RevId: 588059727
Change-Id: Ib3703edd2493050a5da8b30e88b21adc643b1f7f
Diffstat (limited to 'absl/log/internal')
| -rw-r--r-- | absl/log/internal/BUILD.bazel | 1 | ||||
| -rw-r--r-- | absl/log/internal/flags.h | 6 | ||||
| -rw-r--r-- | absl/log/internal/log_impl.h | 66 |
3 files changed, 73 insertions, 0 deletions
diff --git a/absl/log/internal/BUILD.bazel b/absl/log/internal/BUILD.bazel index 2030a3d7..90643a5e 100644 --- a/absl/log/internal/BUILD.bazel +++ b/absl/log/internal/BUILD.bazel @@ -153,6 +153,7 @@ cc_library( ":conditions", ":log_message", ":strip", + "//absl/log:vlog_is_on", ], ) diff --git a/absl/log/internal/flags.h b/absl/log/internal/flags.h index b91b8644..c4539785 100644 --- a/absl/log/internal/flags.h +++ b/absl/log/internal/flags.h @@ -50,4 +50,10 @@ ABSL_DECLARE_FLAG(std::string, log_backtrace_at); // each message logged. Defaults to true. ABSL_DECLARE_FLAG(bool, log_prefix); +// Global log verbosity level. Default is 0. +ABSL_DECLARE_FLAG(int, v); + +// Per-module log verbosity level. By default is empty and is unused. +ABSL_DECLARE_FLAG(std::string, vmodule); + #endif // ABSL_LOG_INTERNAL_FLAGS_H_ diff --git a/absl/log/internal/log_impl.h b/absl/log/internal/log_impl.h index 9326780d..ba90eda8 100644 --- a/absl/log/internal/log_impl.h +++ b/absl/log/internal/log_impl.h @@ -18,6 +18,7 @@ #include "absl/log/internal/conditions.h" #include "absl/log/internal/log_message.h" #include "absl/log/internal/strip.h" +#include "absl/log/vlog_is_on.h" // ABSL_LOG() #define ABSL_LOG_INTERNAL_LOG_IMPL(severity) \ @@ -41,6 +42,35 @@ ABSL_LOGGING_INTERNAL_LOG##severity.InternalStream() #endif +// The `switch` ensures that this expansion is the begnning of a statement (as +// opposed to an expression). The use of both `case 0` and `default` is to +// suppress a compiler warning. +#define ABSL_LOG_INTERNAL_VLOG_IMPL(verbose_level) \ + switch (const int absl_logging_internal_verbose_level = (verbose_level)) \ + case 0: \ + default: \ + ABSL_LOG_INTERNAL_LOG_IF_IMPL( \ + _INFO, VLOG_IS_ON(absl_logging_internal_verbose_level)) \ + .WithVerbosity(absl_logging_internal_verbose_level) + +#ifndef NDEBUG +#define ABSL_LOG_INTERNAL_DVLOG_IMPL(verbose_level) \ + switch (const int absl_logging_internal_verbose_level = (verbose_level)) \ + case 0: \ + default: \ + ABSL_LOG_INTERNAL_LOG_IF_IMPL( \ + _INFO, VLOG_IS_ON(absl_logging_internal_verbose_level)) \ + .WithVerbosity(absl_logging_internal_verbose_level) +#else +#define ABSL_LOG_INTERNAL_DVLOG_IMPL(verbose_level) \ + switch (const int absl_logging_internal_verbose_level = (verbose_level)) \ + case 0: \ + default: \ + ABSL_LOG_INTERNAL_LOG_IF_IMPL( \ + _INFO, false && VLOG_IS_ON(absl_logging_internal_verbose_level)) \ + .WithVerbosity(absl_logging_internal_verbose_level) +#endif + #define ABSL_LOG_INTERNAL_LOG_IF_IMPL(severity, condition) \ ABSL_LOG_INTERNAL_CONDITION##severity(STATELESS, condition) \ ABSL_LOGGING_INTERNAL_LOG##severity.InternalStream() @@ -134,6 +164,42 @@ (EveryNSec, n_seconds) ABSL_LOGGING_INTERNAL_LOG##severity.InternalStream() #endif // def NDEBUG +#define ABSL_LOG_INTERNAL_VLOG_EVERY_N_IMPL(verbose_level, n) \ + switch (const int absl_logging_internal_verbose_level = (verbose_level)) \ + case 0: \ + default: \ + ABSL_LOG_INTERNAL_CONDITION_INFO( \ + STATEFUL, VLOG_IS_ON(absl_logging_internal_verbose_level)) \ + (EveryN, n) ABSL_LOGGING_INTERNAL_LOG_INFO.InternalStream().WithVerbosity( \ + absl_logging_internal_verbose_level) + +#define ABSL_LOG_INTERNAL_VLOG_FIRST_N_IMPL(verbose_level, n) \ + switch (const int absl_logging_internal_verbose_level = (verbose_level)) \ + case 0: \ + default: \ + ABSL_LOG_INTERNAL_CONDITION_INFO( \ + STATEFUL, VLOG_IS_ON(absl_logging_internal_verbose_level)) \ + (FirstN, n) ABSL_LOGGING_INTERNAL_LOG_INFO.InternalStream().WithVerbosity( \ + absl_logging_internal_verbose_level) + +#define ABSL_LOG_INTERNAL_VLOG_EVERY_POW_2_IMPL(verbose_level) \ + switch (const int absl_logging_internal_verbose_level = (verbose_level)) \ + case 0: \ + default: \ + ABSL_LOG_INTERNAL_CONDITION_INFO( \ + STATEFUL, VLOG_IS_ON(absl_logging_internal_verbose_level)) \ + (EveryPow2) ABSL_LOGGING_INTERNAL_LOG_INFO.InternalStream().WithVerbosity( \ + absl_logging_internal_verbose_level) + +#define ABSL_LOG_INTERNAL_VLOG_EVERY_N_SEC_IMPL(verbose_level, n_seconds) \ + switch (const int absl_logging_internal_verbose_level = (verbose_level)) \ + case 0: \ + default: \ + ABSL_LOG_INTERNAL_CONDITION_INFO( \ + STATEFUL, VLOG_IS_ON(absl_logging_internal_verbose_level)) \ + (EveryNSec, n_seconds) ABSL_LOGGING_INTERNAL_LOG_INFO.InternalStream() \ + .WithVerbosity(absl_logging_internal_verbose_level) + #define ABSL_LOG_INTERNAL_LOG_IF_EVERY_N_IMPL(severity, condition, n) \ ABSL_LOG_INTERNAL_CONDITION##severity(STATEFUL, condition)(EveryN, n) \ ABSL_LOGGING_INTERNAL_LOG##severity.InternalStream() |