Merge "Replace all _LOG error calls with ALOGE."

debuggerd/Android.mk

@@ -77,12 +77,12 @@ include $(BUILD_EXECUTABLE)
 
 debuggerd_test_src_files := \
     utility.cpp \
-    test/dump_maps_test.cpp \
     test/dump_memory_test.cpp \
     test/elf_fake.cpp \
     test/log_fake.cpp \
     test/property_fake.cpp \
     test/ptrace_fake.cpp \
+    test/tombstone_test.cpp \
     test/selinux_fake.cpp \
 
 debuggerd_shared_libraries := \

debuggerd/arm/machine.cpp

@@ -15,12 +15,15 @@
  * limitations under the License.
  */
 
+#define LOG_TAG "DEBUG"
+
 #include <errno.h>
 #include <stdint.h>
 #include <string.h>
 #include <sys/ptrace.h>
 
 #include <backtrace/Backtrace.h>
+#include <log/log.h>
 
 #include "machine.h"
 #include "utility.h"
@@ -28,7 +31,7 @@
 void dump_memory_and_code(log_t* log, Backtrace* backtrace) {
   pt_regs regs;
   if (ptrace(PTRACE_GETREGS, backtrace->Tid(), 0, &regs)) {
-    _LOG(log, logtype::ERROR, "cannot get registers: %s\n", strerror(errno));
+    ALOGE("cannot get registers: %s\n", strerror(errno));
     return;
   }
 
@@ -48,7 +51,7 @@ void dump_memory_and_code(log_t* log, Backtrace* backtrace) {
 void dump_registers(log_t* log, pid_t tid) {
   pt_regs r;
   if (ptrace(PTRACE_GETREGS, tid, 0, &r)) {
-    _LOG(log, logtype::ERROR, "cannot get registers: %s\n", strerror(errno));
+    ALOGE("cannot get registers: %s\n", strerror(errno));
     return;
   }
 
@@ -68,7 +71,7 @@ void dump_registers(log_t* log, pid_t tid) {
 
   user_vfp vfp_regs;
   if (ptrace(PTRACE_GETVFPREGS, tid, 0, &vfp_regs)) {
-    _LOG(log, logtype::ERROR, "cannot get FP registers: %s\n", strerror(errno));
+    ALOGE("cannot get FP registers: %s\n", strerror(errno));
     return;
   }
 

debuggerd/arm64/machine.cpp

@@ -15,6 +15,8 @@
  * limitations under the License.
  */
 
+#define LOG_TAG "DEBUG"
+
 #include <elf.h>
 #include <errno.h>
 #include <stdint.h>
@@ -23,6 +25,7 @@
 #include <sys/uio.h>
 
 #include <backtrace/Backtrace.h>
+#include <log/log.h>
 
 #include "machine.h"
 #include "utility.h"
@@ -34,8 +37,7 @@ void dump_memory_and_code(log_t* log, Backtrace* backtrace) {
   io.iov_len = sizeof(regs);
 
   if (ptrace(PTRACE_GETREGSET, backtrace->Tid(), reinterpret_cast<void*>(NT_PRSTATUS), &io) == -1) {
-    _LOG(log, logtype::ERROR, "%s: ptrace failed to get registers: %s",
+    ALOGE("ptrace failed to get registers: %s", strerror(errno));
-         __func__, strerror(errno));
     return;
   }
 
@@ -57,7 +59,7 @@ void dump_registers(log_t* log, pid_t tid) {
   io.iov_len = sizeof(r);
 
   if (ptrace(PTRACE_GETREGSET, tid, (void*) NT_PRSTATUS, (void*) &io) == -1) {
-    _LOG(log, logtype::ERROR, "ptrace error: %s\n", strerror(errno));
+    ALOGE("ptrace error: %s\n", strerror(errno));
     return;
   }
 
@@ -81,7 +83,7 @@ void dump_registers(log_t* log, pid_t tid) {
   io.iov_len = sizeof(f);
 
   if (ptrace(PTRACE_GETREGSET, tid, (void*) NT_PRFPREG, (void*) &io) == -1) {
-    _LOG(log, logtype::ERROR, "ptrace error: %s\n", strerror(errno));
+    ALOGE("ptrace error: %s\n", strerror(errno));
     return;
   }
 

debuggerd/backtrace.cpp

@@ -105,7 +105,7 @@ static void dump_thread(
   }
 
   if (!attached && ptrace(PTRACE_DETACH, tid, 0, 0) != 0) {
-    _LOG(log, logtype::ERROR, "ptrace detach from %d failed: %s\n", tid, strerror(errno));
+    ALOGE("ptrace detach from %d failed: %s\n", tid, strerror(errno));
     *detach_failed = true;
   }
 }

debuggerd/mips/machine.cpp

@@ -14,6 +14,8 @@
  * limitations under the License.
  */
 
+#define LOG_TAG "DEBUG"
+
 #include <errno.h>
 #include <inttypes.h>
 #include <stdint.h>
@@ -21,6 +23,7 @@
 #include <sys/ptrace.h>
 
 #include <backtrace/Backtrace.h>
+#include <log/log.h>
 
 #include "machine.h"
 #include "utility.h"
@@ -32,7 +35,7 @@
 void dump_memory_and_code(log_t* log, Backtrace* backtrace) {
   pt_regs r;
   if (ptrace(PTRACE_GETREGS, backtrace->Tid(), 0, &r)) {
-    _LOG(log, logtype::ERROR, "cannot get registers: %s\n", strerror(errno));
+    ALOGE("cannot get registers: %s\n", strerror(errno));
     return;
   }
 
@@ -61,7 +64,7 @@ void dump_memory_and_code(log_t* log, Backtrace* backtrace) {
 void dump_registers(log_t* log, pid_t tid) {
   pt_regs r;
   if(ptrace(PTRACE_GETREGS, tid, 0, &r)) {
-    _LOG(log, logtype::ERROR, "cannot get registers: %s\n", strerror(errno));
+    ALOGE("cannot get registers: %s\n", strerror(errno));
     return;
   }
 

debuggerd/mips64/machine.cpp

@@ -14,6 +14,8 @@
  * limitations under the License.
  */
 
+#define LOG_TAG "DEBUG"
+
 #include <errno.h>
 #include <inttypes.h>
 #include <stdint.h>
@@ -21,6 +23,7 @@
 #include <sys/ptrace.h>
 
 #include <backtrace/Backtrace.h>
+#include <log/log.h>
 
 #include "machine.h"
 #include "utility.h"
@@ -32,7 +35,7 @@
 void dump_memory_and_code(log_t* log, Backtrace* backtrace) {
   pt_regs r;
   if (ptrace(PTRACE_GETREGS, backtrace->Tid(), 0, &r)) {
-    _LOG(log, logtype::ERROR, "cannot get registers: %s\n", strerror(errno));
+    ALOGE("cannot get registers: %s\n", strerror(errno));
     return;
   }
 
@@ -61,7 +64,7 @@ void dump_memory_and_code(log_t* log, Backtrace* backtrace) {
 void dump_registers(log_t* log, pid_t tid) {
   pt_regs r;
   if(ptrace(PTRACE_GETREGS, tid, 0, &r)) {
-    _LOG(log, logtype::ERROR, "cannot get registers: %s\n", strerror(errno));
+    ALOGE("cannot get registers: %s\n", strerror(errno));
     return;
   }
 

debuggerd/test/dump_memory_test.cpp

@@ -288,9 +288,9 @@ TEST_F(DumpMemoryTest, memory_partially_unreadable_unaligned_return) {
   ASSERT_STREQ(g_expected_partial_dump, tombstone_contents.c_str());
 
 #if defined(__LP64__)
-  ASSERT_STREQ("DEBUG Bytes read 102, is not a multiple of 8\n", getFakeLogPrint().c_str());
+  ASSERT_STREQ("6 DEBUG Bytes read 102, is not a multiple of 8\n", getFakeLogPrint().c_str());
 #else
-  ASSERT_STREQ("DEBUG Bytes read 102, is not a multiple of 4\n", getFakeLogPrint().c_str());
+  ASSERT_STREQ("6 DEBUG Bytes read 102, is not a multiple of 4\n", getFakeLogPrint().c_str());
 #endif
 
   // Verify that the log buf is empty, and no error messages.
@@ -313,12 +313,12 @@ TEST_F(DumpMemoryTest, memory_partially_unreadable_two_unaligned_reads) {
   ASSERT_STREQ(g_expected_partial_dump, tombstone_contents.c_str());
 
 #if defined(__LP64__)
-  ASSERT_STREQ("DEBUG Bytes read 45, is not a multiple of 8\n"
+  ASSERT_STREQ("6 DEBUG Bytes read 45, is not a multiple of 8\n"
-               "DEBUG Bytes after second read 106, is not a multiple of 8\n",
+               "6 DEBUG Bytes after second read 106, is not a multiple of 8\n",
                getFakeLogPrint().c_str());
 #else
-  ASSERT_STREQ("DEBUG Bytes read 45, is not a multiple of 4\n"
+  ASSERT_STREQ("6 DEBUG Bytes read 45, is not a multiple of 4\n"
-               "DEBUG Bytes after second read 106, is not a multiple of 4\n",
+               "6 DEBUG Bytes after second read 106, is not a multiple of 4\n",
                getFakeLogPrint().c_str());
 #endif
 

debuggerd/test/log_fake.cpp

@@ -14,6 +14,7 @@
  * limitations under the License.
  */
 
+#include <errno.h>
 #include <stdarg.h>
 
 #include <string>
@@ -44,14 +45,16 @@ std::string getFakeLogPrint() {
   return g_fake_log_print;
 }
 
-extern "C" int __android_log_buf_write(int, int, const char* tag, const char* msg) {
+extern "C" int __android_log_buf_write(int bufId, int prio, const char* tag, const char* msg) {
+  g_fake_log_buf += std::to_string(bufId) + ' ' + std::to_string(prio) + ' ';
   g_fake_log_buf += tag;
   g_fake_log_buf += ' ';
   g_fake_log_buf += msg;
   return 1;
 }
 
-extern "C" int __android_log_print(int, const char* tag, const char* fmt, ...) {
+extern "C" int __android_log_print(int prio, const char* tag, const char* fmt, ...) {
+  g_fake_log_print += std::to_string(prio) + ' ';
   g_fake_log_print += tag;
   g_fake_log_print += ' ';
 
@@ -70,6 +73,7 @@ extern "C" log_id_t android_name_to_log_id(const char*) {
 }
 
 extern "C" struct logger_list* android_logger_list_open(log_id_t, int, unsigned int, pid_t) {
+  errno = EACCES;
   return nullptr;
 }
 

debuggerd/test/tombstone_test.cpp

@@ -45,7 +45,7 @@ void dump_memory_and_code(log_t*, Backtrace*) {
 void dump_backtrace_to_log(Backtrace*, log_t*, char const*) {
 }
 
-class DumpMapsTest : public ::testing::Test {
+class TombstoneTest : public ::testing::Test {
  protected:
   virtual void SetUp() {
     map_mock_.reset(new BacktraceMapMock());
@@ -92,7 +92,7 @@ class DumpMapsTest : public ::testing::Test {
   log_t log_;
 };
 
-TEST_F(DumpMapsTest, single_map) {
+TEST_F(TombstoneTest, single_map) {
   backtrace_map_t map;
 #if defined(__LP64__)
   map.start = 0x123456789abcd000UL;
@@ -122,7 +122,7 @@ TEST_F(DumpMapsTest, single_map) {
   ASSERT_STREQ("", getFakeLogPrint().c_str());
 }
 
-TEST_F(DumpMapsTest, single_map_elf_build_id) {
+TEST_F(TombstoneTest, single_map_elf_build_id) {
   backtrace_map_t map;
 #if defined(__LP64__)
   map.start = 0x123456789abcd000UL;
@@ -157,7 +157,7 @@ TEST_F(DumpMapsTest, single_map_elf_build_id) {
 
 // Even though build id is present, it should not be printed in either of
 // these cases.
-TEST_F(DumpMapsTest, single_map_no_build_id) {
+TEST_F(TombstoneTest, single_map_no_build_id) {
   backtrace_map_t map;
 #if defined(__LP64__)
   map.start = 0x123456789abcd000UL;
@@ -194,7 +194,7 @@ TEST_F(DumpMapsTest, single_map_no_build_id) {
   ASSERT_STREQ("", getFakeLogPrint().c_str());
 }
 
-TEST_F(DumpMapsTest, multiple_maps) {
+TEST_F(TombstoneTest, multiple_maps) {
   backtrace_map_t map;
 
   map.start = 0xa234000;
@@ -256,7 +256,7 @@ TEST_F(DumpMapsTest, multiple_maps) {
   ASSERT_STREQ("", getFakeLogPrint().c_str());
 }
 
-TEST_F(DumpMapsTest, multiple_maps_fault_address_before) {
+TEST_F(TombstoneTest, multiple_maps_fault_address_before) {
   backtrace_map_t map;
 
   map.start = 0xa434000;
@@ -310,7 +310,7 @@ TEST_F(DumpMapsTest, multiple_maps_fault_address_before) {
   ASSERT_STREQ("", getFakeLogPrint().c_str());
 }
 
-TEST_F(DumpMapsTest, multiple_maps_fault_address_between) {
+TEST_F(TombstoneTest, multiple_maps_fault_address_between) {
   backtrace_map_t map;
 
   map.start = 0xa434000;
@@ -364,7 +364,7 @@ TEST_F(DumpMapsTest, multiple_maps_fault_address_between) {
   ASSERT_STREQ("", getFakeLogPrint().c_str());
 }
 
-TEST_F(DumpMapsTest, multiple_maps_fault_address_in_map) {
+TEST_F(TombstoneTest, multiple_maps_fault_address_in_map) {
   backtrace_map_t map;
 
   map.start = 0xa434000;
@@ -416,7 +416,7 @@ TEST_F(DumpMapsTest, multiple_maps_fault_address_in_map) {
   ASSERT_STREQ("", getFakeLogPrint().c_str());
 }
 
-TEST_F(DumpMapsTest, multiple_maps_fault_address_after) {
+TEST_F(TombstoneTest, multiple_maps_fault_address_after) {
   backtrace_map_t map;
 
   map.start = 0xa434000;
@@ -474,7 +474,7 @@ TEST_F(DumpMapsTest, multiple_maps_fault_address_after) {
   ASSERT_STREQ("", getFakeLogPrint().c_str());
 }
 
-TEST_F(DumpMapsTest, multiple_maps_getsiginfo_fail) {
+TEST_F(TombstoneTest, multiple_maps_getsiginfo_fail) {
   backtrace_map_t map;
 
   map.start = 0xa434000;
@@ -493,7 +493,6 @@ TEST_F(DumpMapsTest, multiple_maps_getsiginfo_fail) {
   ASSERT_TRUE(lseek(log_.tfd, 0, SEEK_SET) == 0);
   ASSERT_TRUE(android::base::ReadFdToString(log_.tfd, &tombstone_contents));
   const char* expected_dump = \
-"Cannot get siginfo for 100: Bad address\n"
 "\nmemory map:\n"
 #if defined(__LP64__)
 "    00000000'0a434000-00000000'0a434fff -w-      1000      1000  (load base 0xd000)\n";
@@ -503,12 +502,11 @@ TEST_F(DumpMapsTest, multiple_maps_getsiginfo_fail) {
   ASSERT_STREQ(expected_dump, tombstone_contents.c_str());
 
   // Verify that the log buf is empty, and no error messages.
-  ASSERT_STREQ("DEBUG Cannot get siginfo for 100: Bad address\n",
+  ASSERT_STREQ("", getFakeLogBuf().c_str());
-               getFakeLogBuf().c_str());
+  ASSERT_STREQ("6 DEBUG Cannot get siginfo for 100: Bad address\n\n", getFakeLogPrint().c_str());
-  ASSERT_STREQ("", getFakeLogPrint().c_str());
 }
 
-TEST_F(DumpMapsTest, multiple_maps_check_signal_has_si_addr) {
+TEST_F(TombstoneTest, multiple_maps_check_signal_has_si_addr) {
   backtrace_map_t map;
 
   map.start = 0xa434000;
@@ -569,3 +567,33 @@ TEST_F(DumpMapsTest, multiple_maps_check_signal_has_si_addr) {
     ASSERT_STREQ("", getFakeLogPrint().c_str());
   }
 }
+
+TEST_F(TombstoneTest, dump_signal_info_error) {
+  siginfo_t si;
+  si.si_signo = 0;
+  ptrace_set_fake_getsiginfo(si);
+
+  dump_signal_info(&log_, 123, SIGSEGV, 10);
+
+  std::string tombstone_contents;
+  ASSERT_TRUE(lseek(log_.tfd, 0, SEEK_SET) == 0);
+  ASSERT_TRUE(android::base::ReadFdToString(log_.tfd, &tombstone_contents));
+  ASSERT_STREQ("", tombstone_contents.c_str());
+
+  ASSERT_STREQ("", getFakeLogBuf().c_str());
+  ASSERT_STREQ("6 DEBUG cannot get siginfo: Bad address\n\n", getFakeLogPrint().c_str());
+}
+
+TEST_F(TombstoneTest, dump_log_file_error) {
+  log_.should_retrieve_logcat = true;
+  dump_log_file(&log_, 123, "/fake/filename", 10);
+
+  std::string tombstone_contents;
+  ASSERT_TRUE(lseek(log_.tfd, 0, SEEK_SET) == 0);
+  ASSERT_TRUE(android::base::ReadFdToString(log_.tfd, &tombstone_contents));
+  ASSERT_STREQ("", tombstone_contents.c_str());
+
+  ASSERT_STREQ("", getFakeLogBuf().c_str());
+  ASSERT_STREQ("6 DEBUG Unable to open /fake/filename: Permission denied\n\n",
+               getFakeLogPrint().c_str());
+}

debuggerd/tombstone.cpp

@@ -180,7 +180,7 @@ static void dump_signal_info(log_t* log, pid_t tid, int signal, int si_code) {
   siginfo_t si;
   memset(&si, 0, sizeof(si));
   if (ptrace(PTRACE_GETSIGINFO, tid, 0, &si) == -1) {
-    _LOG(log, logtype::HEADER, "cannot get siginfo: %s\n", strerror(errno));
+    ALOGE("cannot get siginfo: %s\n", strerror(errno));
     return;
   }
 
@@ -338,7 +338,7 @@ static void dump_all_maps(Backtrace* backtrace, BacktraceMap* map, log_t* log, p
     print_fault_address_marker = signal_has_si_addr(si.si_signo);
     addr = reinterpret_cast<uintptr_t>(si.si_addr);
   } else {
-    _LOG(log, logtype::ERROR, "Cannot get siginfo for %d: %s\n", tid, strerror(errno));
+    ALOGE("Cannot get siginfo for %d: %s\n", tid, strerror(errno));
   }
 
   _LOG(log, logtype::MAPS, "\n");
@@ -448,7 +448,7 @@ static bool dump_sibling_thread_report(
 
     // Skip this thread if cannot ptrace it
     if (ptrace(PTRACE_ATTACH, new_tid, 0, 0) < 0) {
-      _LOG(log, logtype::ERROR, "ptrace attach to %d failed: %s\n", new_tid, strerror(errno));
+      ALOGE("ptrace attach to %d failed: %s\n", new_tid, strerror(errno));
       continue;
     }
 
@@ -471,7 +471,7 @@ static bool dump_sibling_thread_report(
     log->current_tid = log->crashed_tid;
 
     if (ptrace(PTRACE_DETACH, new_tid, 0, 0) != 0) {
-      _LOG(log, logtype::ERROR, "ptrace detach from %d failed: %s\n", new_tid, strerror(errno));
+      ALOGE("ptrace detach from %d failed: %s\n", new_tid, strerror(errno));
       detach_failed = true;
     }
   }
@@ -517,13 +517,11 @@ static void dump_log_file(
         // non-blocking EOF; we're done
         break;
       } else {
-        _LOG(log, logtype::ERROR, "Error while reading log: %s\n",
+        ALOGE("Error while reading log: %s\n", strerror(-actual));
-          strerror(-actual));
         break;
       }
     } else if (actual == 0) {
-      _LOG(log, logtype::ERROR, "Got zero bytes while reading log: %s\n",
+      ALOGE("Got zero bytes while reading log: %s\n", strerror(errno));
-        strerror(errno));
       break;
     }
 
@@ -789,11 +787,11 @@ char* engrave_tombstone(pid_t pid, pid_t tid, int signal, int original_si_code,
   log.crashed_tid = tid;
 
   if ((mkdir(TOMBSTONE_DIR, 0755) == -1) && (errno != EEXIST)) {
-    _LOG(&log, logtype::ERROR, "failed to create %s: %s\n", TOMBSTONE_DIR, strerror(errno));
+    ALOGE("failed to create %s: %s\n", TOMBSTONE_DIR, strerror(errno));
   }
 
   if (chown(TOMBSTONE_DIR, AID_SYSTEM, AID_SYSTEM) == -1) {
-    _LOG(&log, logtype::ERROR, "failed to change ownership of %s: %s\n", TOMBSTONE_DIR, strerror(errno));
+    ALOGE("failed to change ownership of %s: %s\n", TOMBSTONE_DIR, strerror(errno));
   }
 
   int fd = -1;
@@ -801,11 +799,11 @@ char* engrave_tombstone(pid_t pid, pid_t tid, int signal, int original_si_code,
   if (selinux_android_restorecon(TOMBSTONE_DIR, 0) == 0) {
     path = find_and_open_tombstone(&fd);
   } else {
-    _LOG(&log, logtype::ERROR, "Failed to restore security context, not writing tombstone.\n");
+    ALOGE("Failed to restore security context, not writing tombstone.\n");
   }
 
   if (fd < 0) {
-    _LOG(&log, logtype::ERROR, "Skipping tombstone write, nothing to do.\n");
+    ALOGE("Skipping tombstone write, nothing to do.\n");
     *detach_failed = false;
     return NULL;
   }

debuggerd/utility.cpp

@@ -35,8 +35,7 @@ const int MAX_TOTAL_SLEEP_USEC = 10000000; // 10 seconds
 
 // Whitelist output desired in the logcat output.
 bool is_allowed_in_logcat(enum logtype ltype) {
-  if ((ltype == ERROR)
+  if ((ltype == HEADER)
-   || (ltype == HEADER)
    || (ltype == REGISTERS)
    || (ltype == BACKTRACE)) {
     return true;

debuggerd/utility.h

@@ -59,7 +59,6 @@ struct log_t{
 
 // List of types of logs to simplify the logging decision in _LOG
 enum logtype {
-  ERROR,
   HEADER,
   THREAD,
   REGISTERS,

debuggerd/x86/machine.cpp

@@ -14,12 +14,15 @@
  * limitations under the License.
  */
 
+#define LOG_TAG "DEBUG"
+
 #include <errno.h>
 #include <stdint.h>
 #include <string.h>
 #include <sys/ptrace.h>
 
 #include <backtrace/Backtrace.h>
+#include <log/log.h>
 
 #include "machine.h"
 #include "utility.h"
@@ -27,7 +30,7 @@
 void dump_memory_and_code(log_t* log, Backtrace* backtrace) {
   struct pt_regs r;
   if (ptrace(PTRACE_GETREGS, backtrace->Tid(), 0, &r) == -1) {
-    _LOG(log, logtype::ERROR, "cannot get registers: %s\n", strerror(errno));
+    ALOGE("cannot get registers: %s\n", strerror(errno));
     return;
   }
 
@@ -44,7 +47,7 @@ void dump_memory_and_code(log_t* log, Backtrace* backtrace) {
 void dump_registers(log_t* log, pid_t tid) {
   struct pt_regs r;
   if (ptrace(PTRACE_GETREGS, tid, 0, &r) == -1) {
-    _LOG(log, logtype::ERROR, "cannot get registers: %s\n", strerror(errno));
+    ALOGE("cannot get registers: %s\n", strerror(errno));
     return;
   }
 

debuggerd/x86_64/machine.cpp

@@ -14,6 +14,8 @@
 ** limitations under the License.
 */
 
+#define LOG_TAG "DEBUG"
+
 #include <errno.h>
 #include <stdint.h>
 #include <sys/ptrace.h>
@@ -21,6 +23,7 @@
 #include <sys/user.h>
 
 #include <backtrace/Backtrace.h>
+#include <log/log.h>
 
 #include "machine.h"
 #include "utility.h"
@@ -28,7 +31,7 @@
 void dump_memory_and_code(log_t* log, Backtrace* backtrace) {
   struct user_regs_struct r;
   if (ptrace(PTRACE_GETREGS, backtrace->Tid(), 0, &r) == -1) {
-    _LOG(log, logtype::ERROR, "cannot get registers: %s\n", strerror(errno));
+    ALOGE("cannot get registers: %s\n", strerror(errno));
     return;
   }
 
@@ -45,7 +48,7 @@ void dump_memory_and_code(log_t* log, Backtrace* backtrace) {
 void dump_registers(log_t* log, pid_t tid) {
   struct user_regs_struct r;
   if (ptrace(PTRACE_GETREGS, tid, 0, &r) == -1) {
-    _LOG(log, logtype::ERROR, "cannot get registers: %s\n", strerror(errno));
+    ALOGE("cannot get registers: %s\n", strerror(errno));
     return;
   }