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| author | Mark Salyzyn <salyzyn@google.com> | 2014-01-09 07:45:30 -0800 |
|---|---|---|
| committer | Mark Salyzyn <salyzyn@google.com> | 2014-01-27 15:14:18 -0800 |
| commit | d0a83fddf18de1a567692a0eeb43228601c83fcf (patch) | |
| tree | 5fac4fc0570231eab9eb17b44e4c9c0e0264a3bd /liblog | |
| parent | 11aa6ee98c5cc67e149acb7c634f6c2546678c00 (diff) | |
| download | system_core-d0a83fddf18de1a567692a0eeb43228601c83fcf.zip system_core-d0a83fddf18de1a567692a0eeb43228601c83fcf.tar.gz system_core-d0a83fddf18de1a567692a0eeb43228601c83fcf.tar.bz2 | |
liblog: high CPU usage from logcat
BUG: 12457855
- log_read.c poll timeout should be -1 instead of 0 when idling
(cherry picked from commit 080bbfab94ce91e4845860d5253eea6d869bbc18)
Change-Id: I9082a15fae0fbf999c0ed516950a49d65a279298
Diffstat (limited to 'liblog')
| -rw-r--r-- | liblog/log_read.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/liblog/log_read.c b/liblog/log_read.c index 11464ce..379105f 100644 --- a/liblog/log_read.c +++ b/liblog/log_read.c @@ -1,5 +1,5 @@ /* -** Copyright 2013, The Android Open Source Project +** Copyright 2013-2014, The Android Open Source Project ** ** Licensed under the Apache License, Version 2.0 (the "License"); ** you may not use this file except in compliance with the License. @@ -31,7 +31,9 @@ typedef char bool; #define LOG_FILE_DIR "/dev/log/" -#define LOG_TIMEOUT_MS 5 +/* timeout in milliseconds */ +#define LOG_TIMEOUT_FLUSH 5 +#define LOG_TIMEOUT_NEVER -1 #define logger_for_each(logger, logger_list) \ for (logger = node_to_item((logger_list)->node.next, struct logger, node); \ @@ -291,7 +293,7 @@ struct logger *android_logger_open(struct logger_list *logger_list, list_init(&logger->log_list); list_add_tail(&logger_list->node, &logger->node); logger->top = logger_list; - logger_list->timeout_ms = LOG_TIMEOUT_MS; + logger_list->timeout_ms = LOG_TIMEOUT_FLUSH; goto ok; err_name: @@ -494,14 +496,14 @@ int android_logger_list_read(struct logger_list *logger_list, } else if (logger_list->mode & O_NDELAY) { error = EAGAIN; } else { - logger_list->timeout_ms = 0; + logger_list->timeout_ms = LOG_TIMEOUT_NEVER; } logger_list->flush = true; goto try_flush; } - logger_list->timeout_ms = LOG_TIMEOUT_MS; + logger_list->timeout_ms = LOG_TIMEOUT_FLUSH; /* Anti starvation */ if (!logger_list->flush |