Merge "dumpstate: move dump_traces to Dumpstate" am: 6644784ead (34b9ff63) · Commits · e / os / platform_frameworks_native

cmds/dumpstate/dumpstate.cpp

+111 −1

Original line number	Diff line number	Diff line
		@@ -54,7 +54,9 @@
		#include <android/os/IIncidentCompanion.h>
		#include <cutils/native_handle.h>
		#include <cutils/properties.h>
		#include <debuggerd/client.h>
		#include <dumpsys.h>
		#include <dumputils/dump_utils.h>
		#include <hidl/ServiceManagement.h>
		#include <openssl/sha.h>
		#include <private/android_filesystem_config.h>
		@@ -1444,7 +1446,7 @@ static bool DumpstateDefault() {
		RunDumpsysCritical();

		/* collect stack traces from Dalvik and native processes (needs root) */
		dump_traces_path = dump_traces();
		dump_traces_path = ds.DumpTraces();

		/* Run some operations that require root. */
		ds.tombstone_data_ = GetDumpFds(TOMBSTONE_DIR, TOMBSTONE_FILE_PREFIX, !ds.IsZipping());
		@@ -1581,6 +1583,114 @@ static void DumpstateWifiOnly() {
		printf("========================================================\n");
		}

		const char* Dumpstate::DumpTraces() {
		DurationReporter duration_reporter("DUMP TRACES");

		const std::string temp_file_pattern = "/data/anr/dumptrace_XXXXXX";
		const size_t buf_size = temp_file_pattern.length() + 1;
		std::unique_ptr<char[]> file_name_buf(new char[buf_size]);
		memcpy(file_name_buf.get(), temp_file_pattern.c_str(), buf_size);

		// Create a new, empty file to receive all trace dumps.
		//
		// TODO: This can be simplified once we remove support for the old style
		// dumps. We can have a file descriptor passed in to dump_traces instead
		// of creating a file, closing it and then reopening it again.
		android::base::unique_fd fd(mkostemp(file_name_buf.get(), O_APPEND \| O_CLOEXEC));
		if (fd < 0) {
		MYLOGE("mkostemp on pattern %s: %s\n", file_name_buf.get(), strerror(errno));
		return nullptr;
		}

		// Nobody should have access to this temporary file except dumpstate, but we
		// temporarily grant 'read' to 'others' here because this file is created
		// when tombstoned is still running as root, but dumped after dropping. This
		// can go away once support for old style dumping has.
		const int chmod_ret = fchmod(fd, 0666);
		if (chmod_ret < 0) {
		MYLOGE("fchmod on %s failed: %s\n", file_name_buf.get(), strerror(errno));
		return nullptr;
		}

		std::unique_ptr<DIR, decltype(&closedir)> proc(opendir("/proc"), closedir);
		if (proc.get() == nullptr) {
		MYLOGE("opendir /proc failed: %s\n", strerror(errno));
		return nullptr;
		}

		// Number of times process dumping has timed out. If we encounter too many
		// failures, we'll give up.
		int timeout_failures = 0;
		bool dalvik_found = false;

		const std::set<int> hal_pids = get_interesting_hal_pids();

		struct dirent* d;
		while ((d = readdir(proc.get()))) {
		int pid = atoi(d->d_name);
		if (pid <= 0) {
		continue;
		}

		const std::string link_name = android::base::StringPrintf("/proc/%d/exe", pid);
		std::string exe;
		if (!android::base::Readlink(link_name, &exe)) {
		continue;
		}

		bool is_java_process;
		if (exe == "/system/bin/app_process32" \|\| exe == "/system/bin/app_process64") {
		// Don't bother dumping backtraces for the zygote.
		if (IsZygote(pid)) {
		continue;
		}

		dalvik_found = true;
		is_java_process = true;
		} else if (should_dump_native_traces(exe.c_str()) \|\| hal_pids.find(pid) != hal_pids.end()) {
		is_java_process = false;
		} else {
		// Probably a native process we don't care about, continue.
		continue;
		}

		// If 3 backtrace dumps fail in a row, consider debuggerd dead.
		if (timeout_failures == 3) {
		dprintf(fd, "ERROR: Too many stack dump failures, exiting.\n");
		break;
		}

		const uint64_t start = Nanotime();
		const int ret = dump_backtrace_to_file_timeout(
		pid, is_java_process ? kDebuggerdJavaBacktrace : kDebuggerdNativeBacktrace,
		is_java_process ? 5 : 20, fd);

		if (ret == -1) {
		// For consistency, the header and footer to this message match those
		// dumped by debuggerd in the success case.
		dprintf(fd, "\n---- pid %d at [unknown] ----\n", pid);
		dprintf(fd, "Dump failed, likely due to a timeout.\n");
		dprintf(fd, "---- end %d ----", pid);
		timeout_failures++;
		continue;
		}

		// We've successfully dumped stack traces, reset the failure count
		// and write a summary of the elapsed time to the file and continue with the
		// next process.
		timeout_failures = 0;

		dprintf(fd, "[dump %s stack %d: %.3fs elapsed]\n", is_java_process ? "dalvik" : "native",
		pid, (float)(Nanotime() - start) / NANOS_PER_SEC);
		}

		if (!dalvik_found) {
		MYLOGE("Warning: no Dalvik processes found to dump stacks\n");
		}

		return file_name_buf.release();
		}

		void Dumpstate::DumpstateBoard() {
		DurationReporter duration_reporter("dumpstate_board()");
		printf("========================================================\n");

cmds/dumpstate/dumpstate.h

+3 −3

Original line number	Diff line number	Diff line
		@@ -291,6 +291,9 @@ class Dumpstate {
		// TODO: temporary method until Dumpstate object is properly set
		void SetProgress(std::unique_ptr<Progress> progress);

		// Dumps Dalvik and native stack traces, return the trace file location (nullptr if none).
		const char* DumpTraces();

		void DumpstateBoard();

		/*
		@@ -543,9 +546,6 @@ bool redirect_to_existing_file(FILE* redirect, char* path);
		/* create leading directories, if necessary */
		void create_parent_dirs(const char *path);

		/* dump Dalvik and native stack traces, return the trace file location (NULL if none) */
		const char *dump_traces();

		/* for each process in the system, run the specified function */
		void for_each_pid(for_each_pid_func func, const char *header);

cmds/dumpstate/utils.cpp

+0 −111

Original line number	Diff line number	Diff line
		@@ -50,8 +50,6 @@
		#include <android-base/unique_fd.h>
		#include <cutils/properties.h>
		#include <cutils/sockets.h>
		#include <debuggerd/client.h>
		#include <dumputils/dump_utils.h>
		#include <log/log.h>
		#include <private/android_filesystem_config.h>

		@@ -795,115 +793,6 @@ bool redirect_to_existing_file(FILE* redirect, char* path) {
		return _redirect_to_file(redirect, path, O_APPEND);
		}

		// Dump Dalvik and native stack traces, return the trace file location (nullptr if none).
		const char* dump_traces() {
		DurationReporter duration_reporter("DUMP TRACES");

		const std::string temp_file_pattern = "/data/anr/dumptrace_XXXXXX";
		const size_t buf_size = temp_file_pattern.length() + 1;
		std::unique_ptr<char[]> file_name_buf(new char[buf_size]);
		memcpy(file_name_buf.get(), temp_file_pattern.c_str(), buf_size);

		// Create a new, empty file to receive all trace dumps.
		//
		// TODO: This can be simplified once we remove support for the old style
		// dumps. We can have a file descriptor passed in to dump_traces instead
		// of creating a file, closing it and then reopening it again.
		android::base::unique_fd fd(mkostemp(file_name_buf.get(), O_APPEND \| O_CLOEXEC));
		if (fd < 0) {
		MYLOGE("mkostemp on pattern %s: %s\n", file_name_buf.get(), strerror(errno));
		return nullptr;
		}

		// Nobody should have access to this temporary file except dumpstate, but we
		// temporarily grant 'read' to 'others' here because this file is created
		// when tombstoned is still running as root, but dumped after dropping. This
		// can go away once support for old style dumping has.
		const int chmod_ret = fchmod(fd, 0666);
		if (chmod_ret < 0) {
		MYLOGE("fchmod on %s failed: %s\n", file_name_buf.get(), strerror(errno));
		return nullptr;
		}

		std::unique_ptr<DIR, decltype(&closedir)> proc(opendir("/proc"), closedir);
		if (proc.get() == nullptr) {
		MYLOGE("opendir /proc failed: %s\n", strerror(errno));
		return nullptr;
		}

		// Number of times process dumping has timed out. If we encounter too many
		// failures, we'll give up.
		int timeout_failures = 0;
		bool dalvik_found = false;

		const std::set<int> hal_pids = get_interesting_hal_pids();

		struct dirent* d;
		while ((d = readdir(proc.get()))) {
		int pid = atoi(d->d_name);
		if (pid <= 0) {
		continue;
		}

		const std::string link_name = android::base::StringPrintf("/proc/%d/exe", pid);
		std::string exe;
		if (!android::base::Readlink(link_name, &exe)) {
		continue;
		}

		bool is_java_process;
		if (exe == "/system/bin/app_process32" \|\| exe == "/system/bin/app_process64") {
		// Don't bother dumping backtraces for the zygote.
		if (IsZygote(pid)) {
		continue;
		}

		dalvik_found = true;
		is_java_process = true;
		} else if (should_dump_native_traces(exe.c_str()) \|\| hal_pids.find(pid) != hal_pids.end()) {
		is_java_process = false;
		} else {
		// Probably a native process we don't care about, continue.
		continue;
		}

		// If 3 backtrace dumps fail in a row, consider debuggerd dead.
		if (timeout_failures == 3) {
		dprintf(fd, "ERROR: Too many stack dump failures, exiting.\n");
		break;
		}

		const uint64_t start = Nanotime();
		const int ret = dump_backtrace_to_file_timeout(
		pid, is_java_process ? kDebuggerdJavaBacktrace : kDebuggerdNativeBacktrace,
		is_java_process ? 5 : 20, fd);

		if (ret == -1) {
		// For consistency, the header and footer to this message match those
		// dumped by debuggerd in the success case.
		dprintf(fd, "\n---- pid %d at [unknown] ----\n", pid);
		dprintf(fd, "Dump failed, likely due to a timeout.\n");
		dprintf(fd, "---- end %d ----", pid);
		timeout_failures++;
		continue;
		}

		// We've successfully dumped stack traces, reset the failure count
		// and write a summary of the elapsed time to the file and continue with the
		// next process.
		timeout_failures = 0;

		dprintf(fd, "[dump %s stack %d: %.3fs elapsed]\n", is_java_process ? "dalvik" : "native",
		pid, (float)(Nanotime() - start) / NANOS_PER_SEC);
		}

		if (!dalvik_found) {
		MYLOGE("Warning: no Dalvik processes found to dump stacks\n");
		}

		return file_name_buf.release();
		}

		void dump_route_tables() {
		DurationReporter duration_reporter("DUMP ROUTE TABLES");
		if (PropertiesHelper::IsDryRun()) return;