logd: liblog: logcat: Add Statistics (34facab8) · Commits · e / os / android_system_core

include/log/logger.h

+3 −0

Original line number	Diff line number	Diff line
		@@ -146,6 +146,9 @@ int android_logger_get_log_version(struct logger *logger);

		struct logger_list;

		ssize_t android_logger_get_statistics(struct logger_list *logger_list,
		char *buf, size_t len);

		struct logger_list *android_logger_list_alloc(int mode,
		unsigned int tail,
		pid_t pid);

liblog/log_read.c

+26 −0

Original line number	Diff line number	Diff line
		@@ -357,6 +357,32 @@ int android_logger_get_log_version(struct logger *logger UNUSED)
		return 3;
		}

		/*
		* returns statistics
		*/
		ssize_t android_logger_get_statistics(struct logger_list *logger_list,
		char *buf, size_t len)
		{
		struct listnode *node;
		struct logger *logger;
		char *cp = buf;
		size_t remaining = len;
		size_t n;

		n = snprintf(cp, remaining, "getStatistics");
		n = min(n, remaining);
		remaining -= n;
		cp += n;

		logger_for_each(logger, logger_list) {
		n = snprintf(cp, remaining, " %d", logger->id);
		n = min(n, remaining);
		remaining -= n;
		cp += n;
		}
		return send_log_msg(NULL, NULL, buf, len);
		}

		struct logger_list *android_logger_list_alloc(int mode,
		unsigned int tail,
		pid_t pid)

liblog/log_read_kern.c

+14 −0

Original line number	Diff line number	Diff line
		@@ -51,6 +51,8 @@ typedef char bool;
		logger != node_to_item(&(logger_list)->node, struct logger, node); \
		logger = node_to_item((logger)->node.next, struct logger, node))

		#define UNUSED __attribute__((unused))

		/* In the future, we would like to make this list extensible */
		static const char *LOG_NAME[LOG_ID_MAX] = {
		[LOG_ID_MAIN] = "main",
		@@ -248,6 +250,18 @@ int android_logger_get_log_version(struct logger *logger)
		return (ret < 0) ? 1 : ret;
		}

		/*
		* returns statistics
		*/

		ssize_t android_logger_get_statistics(struct logger_list *logger_list UNUSED,
		char *buf, size_t len)
		{
		static const char unsupported[] = "18\nNot Supported\n\f";
		strncpy(buf, unsupported, len);
		return -ENOTSUP;
		}

		struct logger_list *android_logger_list_alloc(int mode,
		unsigned int tail,
		pid_t pid)

logcat/logcat.cpp

+93 −4

Original line number	Diff line number	Diff line
		@@ -225,10 +225,11 @@ static void show_help(const char *cmd)
		" -t <count> print only the most recent <count> lines (implies -d)\n"
		" -T <count> print only the most recent <count> lines (does not imply -d)\n"
		" -g get the size of the log's ring buffer and exit\n"
		" -b <buffer> Request alternate ring buffer, 'main', 'system', 'radio'\n"
		" or 'events'. Multiple -b parameters are allowed and the\n"
		" -b <buffer> Request alternate ring buffer, 'main', 'system', 'radio',\n"
		" 'events' or 'all'. Multiple -b parameters are allowed and\n"
		" results are interleaved. The default is -b main -b system.\n"
		" -B output the log in binary");
		" -B output the log in binary.\n"
		" -S output statistics");


		fprintf(stderr,"\nfilterspecs are a series of \n"
		@@ -278,6 +279,7 @@ int main(int argc, char **argv)
		int hasSetLogFormat = 0;
		int clearLog = 0;
		int getLogSize = 0;
		int printStatistics = 0;
		int mode = O_RDONLY;
		const char *forceFilters = NULL;
		log_device_t* devices = NULL;
		@@ -303,7 +305,7 @@ int main(int argc, char **argv)
		for (;;) {
		int ret;

		ret = getopt(argc, argv, "cdt:T:gsQf:r::n:v:b:B");
		ret = getopt(argc, argv, "cdt:T:gsQf:r::n:v:b:BS");

		if (ret < 0) {
		break;
		@@ -336,6 +338,39 @@ int main(int argc, char **argv)
		break;

		case 'b': {
		if (strcmp(optarg, "all") == 0) {
		while (devices) {
		dev = devices;
		devices = dev->next;
		delete dev;
		}

		dev = devices = new log_device_t("main", false, 'm');
		android::g_devCount = 1;
		if (android_name_to_log_id("system") == LOG_ID_SYSTEM) {
		dev->next = new log_device_t("system", false, 's');
		if (dev->next) {
		dev = dev->next;
		android::g_devCount++;
		}
		}
		if (android_name_to_log_id("radio") == LOG_ID_RADIO) {
		dev->next = new log_device_t("radio", false, 'r');
		if (dev->next) {
		dev = dev->next;
		android::g_devCount++;
		}
		}
		if (android_name_to_log_id("events") == LOG_ID_EVENTS) {
		dev->next = new log_device_t("events", true, 'e');
		if (dev->next) {
		android::g_devCount++;
		needBinary = true;
		}
		}
		break;
		}

		bool binary = strcmp(optarg, "events") == 0;
		if (binary) {
		needBinary = true;
		@@ -470,6 +505,10 @@ int main(int argc, char **argv)
		}
		break;

		case 'S':
		printStatistics = 1;
		break;

		default:
		fprintf(stderr,"Unrecognized Option\n");
		android::show_help(argv[0]);
		@@ -587,6 +626,56 @@ int main(int argc, char **argv)
		dev = dev->next;
		}

		if (printStatistics) {
		size_t len = 8192;
		char *buf;

		for(int retry = 32;
		(retry >= 0) && ((buf = new char [len]));
		delete [] buf, --retry) {
		android_logger_get_statistics(logger_list, buf, len);

		buf[len-1] = '\0';
		size_t ret = atol(buf) + 1;
		if (ret < 4) {
		delete [] buf;
		buf = NULL;
		break;
		}
		bool check = ret <= len;
		len = ret;
		if (check) {
		break;
		}
		}

		if (!buf) {
		perror("statistics read");
		exit(EXIT_FAILURE);
		}

		// remove trailing FF
		char *cp = buf + len - 1;
		*cp = '\0';
		bool truncated = *--cp != '\f';
		if (!truncated) {
		*cp = '\0';
		}

		// squash out the byte count
		cp = buf;
		if (!truncated) {
		while (isdigit(cp) \|\| (cp == '\n')) {
		++cp;
		}
		}

		printf("%s", cp);
		delete [] buf;
		exit(0);
		}


		if (getLogSize) {
		exit(0);
		}

logd/Android.mk

+4 −2

Original line number	Diff line number	Diff line
		@@ -13,12 +13,14 @@ LOCAL_SRC_FILES := \
		FlushCommand.cpp \
		LogBuffer.cpp \
		LogBufferElement.cpp \
		LogTimes.cpp
		LogTimes.cpp \
		LogStatistics.cpp

		LOCAL_SHARED_LIBRARIES := \
		libsysutils \
		liblog \
		libcutils
		libcutils \
		libutils

		LOCAL_MODULE_TAGS := optional