Merge "liblog: add __android_log_is_loggable()" (95f7ecbd) · Commits · e / os / android_system_core

include/log/log.h

+6 −0

Original line number	Diff line number	Diff line
		@@ -555,6 +555,12 @@ typedef enum log_id {
		#define sizeof_log_id_t sizeof(typeof_log_id_t)
		#define typeof_log_id_t unsigned char

		/*
		* Use the per-tag properties "log.tag.<tagname>" to generate a runtime
		* result of non-zero to expose a log.
		*/
		int __android_log_is_loggable(int prio, const char *tag, int def);

		/*
		* Send a simple string to the log.
		*/

liblog/Android.mk

+1 −1

Original line number	Diff line number	Diff line
		@@ -46,7 +46,7 @@ else
		endif

		liblog_host_sources := $(liblog_sources) fake_log_device.c
		liblog_target_sources := $(liblog_sources) log_time.cpp
		liblog_target_sources := $(liblog_sources) log_time.cpp log_is_loggable.c
		ifneq ($(TARGET_USES_LOGD),false)
		liblog_target_sources += log_read.c
		else

liblog/fake_log_device.c

+6 −0

Original line number	Diff line number	Diff line
		@@ -689,3 +689,9 @@ ssize_t fakeLogWritev(int fd, const struct iovec* vector, int count)
		/* Assume that open() was called first. */
		return redirectWritev(fd, vector, count);
		}

		int __android_log_is_loggable(int prio, const char *tag __unused, int def)
		{
		int logLevel = def;
		return logLevel >= 0 && prio >= logLevel;
		}

liblog/log_is_loggable.c

0 → 100644

+69 −0

Original line number	Diff line number	Diff line
		/*
		** Copyright 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.
		** You may obtain a copy of the License at
		**
		** http://www.apache.org/licenses/LICENSE-2.0
		**
		** Unless required by applicable law or agreed to in writing, software
		** distributed under the License is distributed on an "AS IS" BASIS,
		** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
		** See the License for the specific language governing permissions and
		** limitations under the License.
		*/

		#include <ctype.h>
		#include <string.h>
		#include <sys/system_properties.h>

		#include <android/log.h>

		static int __android_log_level(const char *tag, int def)
		{
		char buf[PROP_VALUE_MAX];

		if (!tag \|\| !*tag) {
		return def;
		}
		{
		static const char log_namespace[] = "log.tag.";
		char key[sizeof(log_namespace) + strlen(tag)];

		strcpy(key, log_namespace);
		strcpy(key + sizeof(log_namespace) - 1, tag);

		if (__system_property_get(key + 8, buf) <= 0) {
		buf[0] = '\0';
		}
		}
		switch (toupper(buf[0])) {
		case 'V': return ANDROID_LOG_VERBOSE;
		case 'D': return ANDROID_LOG_DEBUG;
		case 'I': return ANDROID_LOG_INFO;
		case 'W': return ANDROID_LOG_WARN;
		case 'E': return ANDROID_LOG_ERROR;
		case 'F': /* FALLTHRU / / Not officially supported */
		case 'A': return ANDROID_LOG_FATAL;
		case 'S': return -1; /* ANDROID_LOG_SUPPRESS */
		}
		return def;
		}

		int __android_log_is_loggable(int prio, const char *tag, int def)
		{
		static char user;
		int logLevel;

		if (user == 0) {
		char buf[PROP_VALUE_MAX];
		if (__system_property_get("ro.build.type", buf) <= 0) {
		buf[0] = '\0';
		}
		user = strcmp(buf, "user") ? -1 : 1;
		}

		logLevel = (user == 1) ? def : __android_log_level(tag, def);
		return logLevel >= 0 && prio >= logLevel;
		}

liblog/log_read.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -34,7 +34,11 @@
		/* branchless on many architectures. */
		#define min(x,y) ((y) ^ (((x) ^ (y)) & -((x) < (y))))

		#if (defined(USE_MINGW) \|\| defined(HAVE_WINSOCK))
		#define WEAK static
		#else
		#define WEAK __attribute__((weak))
		#endif
		#ifndef __unused
		#define __unused __attribute__((unused))
		#endif