Merge "[cleanup] Fix a clang-tidy warning"
diff --git a/base/logging.cpp b/base/logging.cpp
index cd460eb..3c73fea 100644
--- a/base/logging.cpp
+++ b/base/logging.cpp
@@ -195,7 +195,6 @@
return logging_lock;
}
-// Only used for Q fallback.
static LogFunction& Logger() {
#ifdef __ANDROID__
static auto& logger = *new LogFunction(LogdLogger());
@@ -205,7 +204,6 @@
return logger;
}
-// Only used for Q fallback.
static AbortFunction& Aborter() {
static auto& aborter = *new AbortFunction(DefaultAborter);
return aborter;
@@ -416,45 +414,27 @@
}
void SetLogger(LogFunction&& logger) {
+ Logger() = std::move(logger);
+
static auto& liblog_functions = GetLibLogFunctions();
if (liblog_functions) {
- // We need to atomically swap the old and new pointers since other threads may be logging.
- // We know all threads will be using the new logger after __android_log_set_logger() returns,
- // so we can delete it then.
- // This leaks one std::function<> per instance of libbase if multiple copies of libbase within a
- // single process call SetLogger(). That is the same cost as having a static
- // std::function<>, which is the not-thread-safe alternative.
- static std::atomic<LogFunction*> logger_function(nullptr);
- auto* old_logger_function = logger_function.exchange(new LogFunction(logger));
liblog_functions->__android_log_set_logger([](const struct __android_log_message* log_message) {
auto log_id = log_id_tToLogId(log_message->buffer_id);
auto severity = PriorityToLogSeverity(log_message->priority);
- auto& function = *logger_function.load(std::memory_order_acquire);
- function(log_id, severity, log_message->tag, log_message->file, log_message->line,
+ Logger()(log_id, severity, log_message->tag, log_message->file, log_message->line,
log_message->message);
});
- delete old_logger_function;
- } else {
- std::lock_guard<std::mutex> lock(LoggingLock());
- Logger() = std::move(logger);
}
}
void SetAborter(AbortFunction&& aborter) {
+ Aborter() = std::move(aborter);
+
static auto& liblog_functions = GetLibLogFunctions();
if (liblog_functions) {
- // See the comment in SetLogger().
- static std::atomic<AbortFunction*> abort_function(nullptr);
- auto* old_abort_function = abort_function.exchange(new AbortFunction(aborter));
- liblog_functions->__android_log_set_aborter([](const char* abort_message) {
- auto& function = *abort_function.load(std::memory_order_acquire);
- function(abort_message);
- });
- delete old_abort_function;
- } else {
- std::lock_guard<std::mutex> lock(LoggingLock());
- Aborter() = std::move(aborter);
+ liblog_functions->__android_log_set_aborter(
+ [](const char* abort_message) { Aborter()(abort_message); });
}
}
diff --git a/liblog/include/android/log.h b/liblog/include/android/log.h
index 512c7cd..8a0ebf2 100644
--- a/liblog/include/android/log.h
+++ b/liblog/include/android/log.h
@@ -185,14 +185,26 @@
* and sending log messages to user defined loggers specified in __android_log_set_logger().
*/
struct __android_log_message {
- size_t
- struct_size; /** Must be set to sizeof(__android_log_message) and is used for versioning. */
- int32_t buffer_id; /** {@link log_id_t} values. */
- int32_t priority; /** {@link android_LogPriority} values. */
- const char* tag; /** The tag for the log message. */
- const char* file; /** Optional file name, may be set to nullptr. */
- uint32_t line; /** Optional line number, ignore if file is nullptr. */
- const char* message; /** The log message itself. */
+ /** Must be set to sizeof(__android_log_message) and is used for versioning. */
+ size_t struct_size;
+
+ /** {@link log_id_t} values. */
+ int32_t buffer_id;
+
+ /** {@link android_LogPriority} values. */
+ int32_t priority;
+
+ /** The tag for the log message. */
+ const char* tag;
+
+ /** Optional file name, may be set to nullptr. */
+ const char* file;
+
+ /** Optional line number, ignore if file is nullptr. */
+ uint32_t line;
+
+ /** The log message itself. */
+ const char* message;
};
/**
@@ -215,7 +227,7 @@
* buffers, then pass the message to liblog via this function, and therefore we do not want to
* duplicate the loggability check here.
*
- * @param log_message the log message itself, see {@link __android_log_message}.
+ * @param log_message the log message itself, see __android_log_message.
*
* Available since API level 30.
*/
@@ -237,7 +249,7 @@
* Writes the log message to logd. This is an __android_logger_function and can be provided to
* __android_log_set_logger(). It is the default logger when running liblog on a device.
*
- * @param log_message the log message to write, see {@link __android_log_message}.
+ * @param log_message the log message to write, see __android_log_message.
*
* Available since API level 30.
*/
@@ -247,7 +259,7 @@
* Writes the log message to stderr. This is an __android_logger_function and can be provided to
* __android_log_set_logger(). It is the default logger when running liblog on host.
*
- * @param log_message the log message to write, see {@link __android_log_message}.
+ * @param log_message the log message to write, see __android_log_message.
*
* Available since API level 30.
*/
@@ -259,7 +271,7 @@
* user defined aborter function is highly recommended to abort and be noreturn, but is not strictly
* required to.
*
- * @param aborter the new aborter function, see {@link __android_aborter_function}.
+ * @param aborter the new aborter function, see __android_aborter_function.
*
* Available since API level 30.
*/
@@ -297,7 +309,26 @@
* minimum priority needed to log. If only one is set, then that value is used to determine the
* minimum priority needed. If none are set, then default_priority is used.
*
- * @param prio the priority to test, takes {@link android_LogPriority} values.
+ * @param prio the priority to test, takes android_LogPriority values.
+ * @param tag the tag to test.
+ * @param default_prio the default priority to use if no properties or minimum priority are set.
+ * @return an integer where 1 indicates that the message is loggable and 0 indicates that it is not.
+ *
+ * Available since API level 30.
+ */
+int __android_log_is_loggable(int prio, const char* tag, int default_prio) __INTRODUCED_IN(30);
+
+/**
+ * Use the per-tag properties "log.tag.<tagname>" along with the minimum priority from
+ * __android_log_set_minimum_priority() to determine if a log message with a given prio and tag will
+ * be printed. A non-zero result indicates yes, zero indicates false.
+ *
+ * If both a priority for a tag and a minimum priority are set by
+ * __android_log_set_minimum_priority(), then the lowest of the two values are to determine the
+ * minimum priority needed to log. If only one is set, then that value is used to determine the
+ * minimum priority needed. If none are set, then default_priority is used.
+ *
+ * @param prio the priority to test, takes android_LogPriority values.
* @param tag the tag to test.
* @param len the length of the tag.
* @param default_prio the default priority to use if no properties or minimum priority are set.
@@ -305,15 +336,14 @@
*
* Available since API level 30.
*/
-int __android_log_is_loggable(int prio, const char* tag, int default_prio) __INTRODUCED_IN(30);
int __android_log_is_loggable_len(int prio, const char* tag, size_t len, int default_prio)
__INTRODUCED_IN(30);
/**
* Sets the minimum priority that will be logged for this process.
*
- * @param priority the new minimum priority to set, takes @{link android_LogPriority} values.
- * @return the previous set minimum priority as @{link android_LogPriority} values, or
+ * @param priority the new minimum priority to set, takes android_LogPriority values.
+ * @return the previous set minimum priority as android_LogPriority values, or
* ANDROID_LOG_DEFAULT if none was set.
*
* Available since API level 30.
@@ -324,7 +354,7 @@
* Gets the minimum priority that will be logged for this process. If none has been set by a
* previous __android_log_set_minimum_priority() call, this returns ANDROID_LOG_DEFAULT.
*
- * @return the current minimum priority as @{link android_LogPriority} values, or
+ * @return the current minimum priority as android_LogPriority values, or
* ANDROID_LOG_DEFAULT if none is set.
*
* Available since API level 30.
diff --git a/liblog/logger_write.cpp b/liblog/logger_write.cpp
index d15b367..3a75fa3 100644
--- a/liblog/logger_write.cpp
+++ b/liblog/logger_write.cpp
@@ -28,7 +28,6 @@
#endif
#include <atomic>
-#include <shared_mutex>
#include <android-base/errno_restorer.h>
#include <android-base/macros.h>
@@ -38,7 +37,6 @@
#include "android/log.h"
#include "log/log_read.h"
#include "logger.h"
-#include "rwlock.h"
#include "uio.h"
#ifdef __ANDROID__
@@ -142,10 +140,8 @@
static std::string default_tag = getprogname();
return default_tag;
}
-RwLock default_tag_lock;
void __android_log_set_default_tag(const char* tag) {
- auto lock = std::unique_lock{default_tag_lock};
GetDefaultTag().assign(tag, 0, LOGGER_ENTRY_MAX_PAYLOAD);
}
@@ -163,10 +159,8 @@
#else
static __android_logger_function logger_function = __android_log_stderr_logger;
#endif
-static RwLock logger_function_lock;
void __android_log_set_logger(__android_logger_function logger) {
- auto lock = std::unique_lock{logger_function_lock};
logger_function = logger;
}
@@ -180,15 +174,12 @@
}
static __android_aborter_function aborter_function = __android_log_default_aborter;
-static RwLock aborter_function_lock;
void __android_log_set_aborter(__android_aborter_function aborter) {
- auto lock = std::unique_lock{aborter_function_lock};
aborter_function = aborter;
}
void __android_log_call_aborter(const char* abort_message) {
- auto lock = std::shared_lock{aborter_function_lock};
aborter_function(abort_message);
}
@@ -310,9 +301,7 @@
return;
}
- auto tag_lock = std::shared_lock{default_tag_lock, std::defer_lock};
if (log_message->tag == nullptr) {
- tag_lock.lock();
log_message->tag = GetDefaultTag().c_str();
}
@@ -322,7 +311,6 @@
}
#endif
- auto lock = std::shared_lock{logger_function_lock};
logger_function(log_message);
}
diff --git a/liblog/logger_write.h b/liblog/logger_write.h
index 065fd55..eee2778 100644
--- a/liblog/logger_write.h
+++ b/liblog/logger_write.h
@@ -18,7 +18,4 @@
#include <string>
-#include "rwlock.h"
-
-std::string& GetDefaultTag(); // Must read lock default_tag_lock
-extern RwLock default_tag_lock;
\ No newline at end of file
+std::string& GetDefaultTag();
diff --git a/liblog/properties.cpp b/liblog/properties.cpp
index abd48fc..37670ec 100644
--- a/liblog/properties.cpp
+++ b/liblog/properties.cpp
@@ -23,7 +23,6 @@
#include <unistd.h>
#include <algorithm>
-#include <shared_mutex>
#include <private/android_logger.h>
@@ -99,9 +98,7 @@
static const char log_namespace[] = "persist.log.tag.";
static const size_t base_offset = 8; /* skip "persist." */
- auto tag_lock = std::shared_lock{default_tag_lock, std::defer_lock};
if (tag == nullptr || len == 0) {
- tag_lock.lock();
auto& tag_string = GetDefaultTag();
tag = tag_string.c_str();
len = tag_string.size();