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-rw-r--r--cmds/runtime/SignalHandler.h137
1 files changed, 0 insertions, 137 deletions
diff --git a/cmds/runtime/SignalHandler.h b/cmds/runtime/SignalHandler.h
deleted file mode 100644
index 7f4ef8e..0000000
--- a/cmds/runtime/SignalHandler.h
+++ /dev/null
@@ -1,137 +0,0 @@
-//
-// Copyright 2005 The Android Open Source Project
-//
-#ifndef ANDROID_SIGNAL_HANDLER_H
-#define ANDROID_SIGNAL_HANDLER_H
-
-#include <utils/KeyedVector.h>
-#include <utils/threads.h>
-
-#include <signal.h>
-
-namespace android {
-
-// ----------------------------------------------------------------------
-
-enum {
- DEFAULT_PROCESS_TAG = 1
-};
-
-class SignalHandler
-{
-public:
- typedef void (*child_callback_t)(pid_t child, void* userData);
-
- /**
- * Set a handler for when a child process exits. By calling
- * this, a waitpid() will be done when the child exits to remove
- * it from the zombie state. You can also optionally specify a
- * handler to be called when the child exits.
- *
- * If there is already a handler for this child process, it is
- * replaced by this new handler. In this case the old handler's
- * function is not called.
- *
- * @param childPid Process ID of child to watch.
- * @param childTag User-defined tag for this child. Must be
- * greater than zero.
- * @param handler If non-NULL, this will be called when the
- * child exits. It may be called in either a
- * separate signal handling thread, or
- * immediately if the child has already exited.
- * @param userData Propageted as-is to handler.
- *
- * @return status_t NO_ERROR if all is well.
- */
- static status_t setChildHandler(pid_t childPid,
- int childTag = DEFAULT_PROCESS_TAG,
- child_callback_t handler = NULL,
- void* userData = NULL);
-
- /**
- * Kill all of the child processes for which we have a waiting
- * handler, whose tag is the given value. If tag is 0, all
- * children are killed.
- *
- * @param tag
- */
- static void killAllChildren(int tag = 0);
-
-private:
- SignalHandler();
- ~SignalHandler();
-
- static SignalHandler* getInstance();
-
- static void sigAction(int, siginfo_t*, void*);
-
- // --------------------------------------------------
- // Shared state... all of this is protected by mLock.
- // --------------------------------------------------
-
- mutable Mutex mLock;
-
- struct ChildHandler
- {
- pid_t childPid;
- int tag;
- child_callback_t handler;
- void* userData;
- };
- KeyedVector<pid_t, ChildHandler> mChildHandlers;
-
- // --------------------------------------------------
- // Commmand queue... data is inserted by the signal
- // handler using atomic ops, and retrieved by the
- // signal processing thread. Because these are touched
- // by the signal handler, no lock is used.
- // --------------------------------------------------
-
- enum {
- COMMAND_QUEUE_SIZE = 64
- };
- struct CommandEntry
- {
- int filled;
- int signum;
- siginfo_t info;
- };
-
- // The top of the queue. This is incremented atomically by the
- // signal handler before placing a command in the queue.
- volatile int32_t mCommandTop;
-
- // The bottom of the queue. Only modified by the processing
- // thread; the signal handler reads it only to determine if the
- // queue is full.
- int32_t mCommandBottom;
-
- // Incremented each time we receive a signal and don't have room
- // for it on the command queue.
- volatile int32_t mLostCommands;
-
- // The command processing thread.
- class ProcessThread;
- sp<Thread> mProcessThread;
-
- // Pipe used to tell command processing thread when new commands.
- // are available. The thread blocks on the read end, the signal
- // handler writes when it enqueues new commands.
- int mAvailMsg[2];
-
- // The commands.
- CommandEntry mCommands[COMMAND_QUEUE_SIZE];
-
- // --------------------------------------------------
- // Singleton.
- // --------------------------------------------------
-
- static Mutex mInstanceLock;
- static SignalHandler* mInstance;
-};
-
-// ----------------------------------------------------------------------
-
-}; // namespace android
-
-#endif // ANDROID_SIGNAL_HANDLER_H