#include <stdarg.h>#include <stddef.h>#include <stdint.h>#include <sys/cdefs.h>
Include dependency graph for log.h:
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Classes | |
| struct | __android_log_message |
Macros | |
| #define | __INTRODUCED_IN(x) |
Typedefs | |
| typedef enum android_LogPriority | android_LogPriority |
| typedef int int void enum log_id | log_id_t |
| typedef void(* | __android_logger_function) (const struct __android_log_message *log_message) |
| typedef void(* | __android_aborter_function) (const char *abort_message) |
Enumerations | |
| enum | android_LogPriority { ANDROID_LOG_UNKNOWN = 0 , ANDROID_LOG_DEFAULT , ANDROID_LOG_VERBOSE , ANDROID_LOG_DEBUG , ANDROID_LOG_INFO , ANDROID_LOG_WARN , ANDROID_LOG_ERROR , ANDROID_LOG_FATAL , ANDROID_LOG_SILENT } |
| enum | log_id { LOG_ID_MIN = 0 , LOG_ID_MAIN = 0 , LOG_ID_RADIO = 1 , LOG_ID_EVENTS = 2 , LOG_ID_SYSTEM = 3 , LOG_ID_CRASH = 4 , LOG_ID_STATS = 5 , LOG_ID_SECURITY = 6 , LOG_ID_KERNEL = 7 , LOG_ID_MAX , LOG_ID_DEFAULT = 0x7FFFFFFF } |
Functions | |
| int | __android_log_write (int prio, const char *tag, const char *text) |
| int | __android_log_print (int prio, const char *tag, const char *fmt,...) __attribute__((__format__(printf |
| int int | __android_log_vprint (int prio, const char *tag, const char *fmt, va_list ap) __attribute__((__format__(printf |
| int int void | __android_log_assert (const char *cond, const char *tag, const char *fmt,...) __attribute__((__noreturn__)) __attribute__((__format__(printf |
| int | __android_log_buf_write (int bufID, int prio, const char *tag, const char *text) |
| int | __android_log_buf_print (int bufID, int prio, const char *tag, const char *fmt,...) __attribute__((__format__(printf |
| void | __android_log_write_log_message (struct __android_log_message *log_message) __INTRODUCED_IN(30) |
| void | __android_log_set_logger (__android_logger_function logger) __INTRODUCED_IN(30) |
| void | __android_log_logd_logger (const struct __android_log_message *log_message) __INTRODUCED_IN(30) |
| void | __android_log_stderr_logger (const struct __android_log_message *log_message) __INTRODUCED_IN(30) |
| void | __android_log_set_aborter (__android_aborter_function aborter) __INTRODUCED_IN(30) |
| void | __android_log_call_aborter (const char *abort_message) __INTRODUCED_IN(30) |
| void | __android_log_default_aborter (const char *abort_message) __attribute__((noreturn)) __INTRODUCED_IN(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) |
| int32_t | __android_log_set_minimum_priority (int32_t priority) __INTRODUCED_IN(30) |
| int32_t | __android_log_get_minimum_priority (void) __INTRODUCED_IN(30) |
| void | __android_log_set_default_tag (const char *tag) __INTRODUCED_IN(30) |
Detailed Description
Support routines to send messages to the Android log buffer, which can later be accessed through the logcat utility.
Each log message must have
- a priority
- a log tag
- some text
The tag normally corresponds to the component that emits the log message, and should be reasonably small.
Log message text may be truncated to less than an implementation-specific limit (1023 bytes).
Note that a newline character ("\n") will be appended automatically to your log message, if not already there. It is not possible to send several messages and have them appear on a single line in logcat.
Please use logging in moderation:
- Sending log messages eats CPU and slow down your application and the system.
- The circular log buffer is pretty small, so sending many messages will hide other important log messages.
- In release builds, only send log messages to account for exceptional conditions.
