1 files changed, 87 insertions, 0 deletions
diff --git a/libcutils/debugger.c b/libcutils/debugger.c
new file mode 100644
index 0000000..9425006
--- /dev/null
+++ b/libcutils/debugger.c
@@ -0,0 +1,87 @@
+/*
+ * Copyright (C) 2012 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 <stdlib.h>
+#include <unistd.h>
+
+#include <cutils/debugger.h>
+#include <cutils/sockets.h>
+
+int dump_tombstone(pid_t tid, char* pathbuf, size_t pathlen) {
+    int s = socket_local_client(DEBUGGER_SOCKET_NAME,
+            ANDROID_SOCKET_NAMESPACE_ABSTRACT, SOCK_STREAM);
+    if (s < 0) {
+        return -1;
+    }
+
+    debugger_msg_t msg;
+    msg.tid = tid;
+    msg.action = DEBUGGER_ACTION_DUMP_TOMBSTONE;
+
+    int result = 0;
+    if (TEMP_FAILURE_RETRY(write(s, &msg, sizeof(msg))) != sizeof(msg)) {
+        result = -1;
+    } else {
+        char ack;
+        if (TEMP_FAILURE_RETRY(read(s, &ack, 1)) != 1) {
+            result = -1;
+        } else {
+            if (pathbuf && pathlen) {
+                ssize_t n = TEMP_FAILURE_RETRY(read(s, pathbuf, pathlen - 1));
+                if (n <= 0) {
+                    result = -1;
+                } else {
+                    pathbuf[n] = '\0';
+                }
+            }
+        }
+    }
+    TEMP_FAILURE_RETRY(close(s));
+    return result;
+}
+
+int dump_backtrace_to_file(pid_t tid, int fd) {
+    int s = socket_local_client(DEBUGGER_SOCKET_NAME,
+            ANDROID_SOCKET_NAMESPACE_ABSTRACT, SOCK_STREAM);
+    if (s < 0) {
+        return -1;
+    }
+
+    debugger_msg_t msg;
+    msg.tid = tid;
+    msg.action = DEBUGGER_ACTION_DUMP_BACKTRACE;
+
+    int result = 0;
+    if (TEMP_FAILURE_RETRY(write(s, &msg, sizeof(msg))) != sizeof(msg)) {
+        result = -1;
+    } else {
+        char ack;
+        if (TEMP_FAILURE_RETRY(read(s, &ack, 1)) != 1) {
+            result = -1;
+        } else {
+            char buffer[4096];
+            ssize_t n;
+            while ((n = TEMP_FAILURE_RETRY(read(s, buffer, sizeof(buffer)))) > 0) {
+                if (TEMP_FAILURE_RETRY(write(fd, buffer, n)) != n) {
+                    result = -1;
+                    break;
+                }
+            }
+        }
+    }
+    TEMP_FAILURE_RETRY(close(s));
+    return result;
+}