Merge "logd: report logging memory overhead" am: d3754ff696 am: 386630f4ce (c377c405) · Commits · e / os / android_system_core

logd/LogStatistics.cpp

+63 −38

Original line number	Diff line number	Diff line
		@@ -21,6 +21,8 @@
		#include <sys/types.h>
		#include <unistd.h>

		#include <list>

		#include <log/logger.h>

		#include "LogStatistics.h"
		@@ -467,55 +469,86 @@ std::string LogStatistics::format(uid_t uid, pid_t pid,
		short spaces = 1;

		log_id_for_each(id) {
		if (!(logMask & (1 << id))) {
		continue;
		}
		if (!(logMask & (1 << id))) continue;
		oldLength = output.length();
		if (spaces < 0) {
		spaces = 0;
		}
		if (spaces < 0) spaces = 0;
		output += android::base::StringPrintf("%*s%s", spaces, "",
		android_log_id_to_name(id));
		spaces += spaces_total + oldLength - output.length();
		}
		if (spaces < 0) spaces = 0;
		output += android::base::StringPrintf("%*sTotal", spaces, "");

		spaces = 4;
		output += "\nTotal";
		static const char TotalStr[] = "\nTotal";
		spaces = 10 - strlen(TotalStr);
		output += TotalStr;

		size_t totalSize = 0;
		size_t totalEls = 0;
		log_id_for_each(id) {
		if (!(logMask & (1 << id))) {
		continue;
		}
		if (!(logMask & (1 << id))) continue;
		oldLength = output.length();
		if (spaces < 0) {
		spaces = 0;
		}
		output += android::base::StringPrintf("%*s%zu/%zu", spaces, "",
		sizesTotal(id),
		elementsTotal(id));
		if (spaces < 0) spaces = 0;
		size_t szs = sizesTotal(id);
		totalSize += szs;
		size_t els = elementsTotal(id);
		totalEls += els;
		output += android::base::StringPrintf("%*s%zu/%zu", spaces, "", szs, els);
		spaces += spaces_total + oldLength - output.length();
		}
		if (spaces < 0) spaces = 0;
		output += android::base::StringPrintf("%*s%zu/%zu", spaces, "", totalSize, totalEls);

		spaces = 6;
		output += "\nNow";
		static const char NowStr[] = "\nNow";
		spaces = 10 - strlen(NowStr);
		output += NowStr;

		totalSize = 0;
		totalEls = 0;
		log_id_for_each(id) {
		if (!(logMask & (1 << id))) {
		continue;
		}
		if (!(logMask & (1 << id))) continue;

		size_t els = elements(id);
		if (els) {
		oldLength = output.length();
		if (spaces < 0) {
		spaces = 0;
		if (spaces < 0) spaces = 0;
		size_t szs = sizes(id);
		totalSize += szs;
		totalEls += els;
		output += android::base::StringPrintf("%*s%zu/%zu", spaces, "", szs, els);
		spaces -= output.length() - oldLength;
		}
		output += android::base::StringPrintf("%*s%zu/%zu", spaces, "",
		sizes(id), els);
		spaces += spaces_total;
		}
		if (spaces < 0) spaces = 0;
		output += android::base::StringPrintf("%*s%zu/%zu", spaces, "", totalSize, totalEls);

		static const char OverheadStr[] = "\nOverhead";
		spaces = 10 - strlen(OverheadStr);
		output += OverheadStr;

		totalSize = 0;
		log_id_for_each(id) {
		if (!(logMask & (1 << id))) continue;

		size_t els = elements(id);
		if (els) {
		oldLength = output.length();
		if (spaces < 0) spaces = 0;
		// estimate the std::list overhead.
		static const size_t overhead =
		((sizeof(LogBufferElement) + sizeof(uint64_t) - 1) &
		-sizeof(uint64_t)) +
		sizeof(std::list<LogBufferElement*>);
		size_t szs = sizes(id) + els * overhead;
		totalSize += szs;
		output += android::base::StringPrintf("%*s%zu", spaces, "", szs);
		spaces -= output.length() - oldLength;
		}
		spaces += spaces_total;
		}
		if (spaces < 0) spaces = 0;
		output += android::base::StringPrintf("%*s%zu", spaces, "", totalSize);

		// Report on Chattiest

		@@ -523,9 +556,7 @@ std::string LogStatistics::format(uid_t uid, pid_t pid,

		// Chattiest by application (UID)
		log_id_for_each(id) {
		if (!(logMask & (1 << id))) {
		continue;
		}
		if (!(logMask & (1 << id))) continue;

		name = (uid == AID_ROOT)
		? "Chattiest UIDs in %s log buffer:"
		@@ -539,27 +570,21 @@ std::string LogStatistics::format(uid_t uid, pid_t pid,
		: "Logging for this PID:";
		output += pidTable.format(*this, uid, pid, name);
		name = "Chattiest TIDs";
		if (pid) {
		name += android::base::StringPrintf(" for PID %d", pid);
		}
		if (pid) name += android::base::StringPrintf(" for PID %d", pid);
		name += ":";
		output += tidTable.format(*this, uid, pid, name);
		}

		if (enable && (logMask & (1 << LOG_ID_EVENTS))) {
		name = "Chattiest events log buffer TAGs";
		if (pid) {
		name += android::base::StringPrintf(" for PID %d", pid);
		}
		if (pid) name += android::base::StringPrintf(" for PID %d", pid);
		name += ":";
		output += tagTable.format(*this, uid, pid, name, LOG_ID_EVENTS);
		}

		if (enable && (logMask & (1 << LOG_ID_SECURITY))) {
		name = "Chattiest security log buffer TAGs";
		if (pid) {
		name += android::base::StringPrintf(" for PID %d", pid);
		}
		if (pid) name += android::base::StringPrintf(" for PID %d", pid);
		name += ":";
		output += securityTagTable.format(*this, uid, pid, name, LOG_ID_SECURITY);
		}