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Unified Diff: ipc/ipc_message_macros.h

Issue 283623002: Add support for passing an arbitrary parameter to an IPC message handler. The motivation is for Web… (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src/
Patch Set: sync Created 6 years, 7 months ago
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Index: ipc/ipc_message_macros.h
===================================================================
--- ipc/ipc_message_macros.h (revision 270218)
+++ ipc/ipc_message_macros.h (working copy)
@@ -434,9 +434,12 @@
// The following macros define the common set of methods provided by ASYNC
// message classes.
+// This macro is for all the async IPCs that don't pass an extra parameter using
+// IPC_BEGIN_MESSAGE_MAP_WITH_PARAM.
#define IPC_ASYNC_MESSAGE_METHODS_GENERIC \
- template<class T, class S, class Method> \
- static bool Dispatch(const Message* msg, T* obj, S* sender, Method func) { \
+ template<class T, class S, class P, class Method> \
+ static bool Dispatch(const Message* msg, T* obj, S* sender, P* parameter, \
+ Method func) { \
Schema::Param p; \
if (Read(msg, &p)) { \
DispatchToMethod(obj, func, p); \
@@ -444,124 +447,86 @@
} \
return false; \
}
+
+// The following macros are for for async IPCs which have a dispatcher with an
+// extra parameter specified using IPC_BEGIN_MESSAGE_MAP_WITH_PARAM.
#define IPC_ASYNC_MESSAGE_METHODS_1 \
IPC_ASYNC_MESSAGE_METHODS_GENERIC \
- template<class T, class S, typename TA> \
- static bool Dispatch(const Message* msg, T* obj, S* sender, \
- void (T::*func)(const Message&, TA)) { \
+ template<class T, class S, class P, typename TA> \
+ static bool Dispatch(const Message* msg, T* obj, S* sender, P* parameter, \
+ void (T::*func)(P*, TA)) { \
Schema::Param p; \
if (Read(msg, &p)) { \
- (obj->*func)(*msg, p.a); \
+ (obj->*func)(parameter, p.a); \
return true; \
} \
return false; \
}
#define IPC_ASYNC_MESSAGE_METHODS_2 \
IPC_ASYNC_MESSAGE_METHODS_GENERIC \
- template<class T, class S, typename TA, typename TB> \
- static bool Dispatch(const Message* msg, T* obj, S* sender, \
- void (T::*func)(const Message&, TA, TB)) { \
+ template<class T, class S, class P, typename TA, typename TB> \
+ static bool Dispatch(const Message* msg, T* obj, S* sender, P* parameter, \
+ void (T::*func)(P*, TA, TB)) { \
Schema::Param p; \
if (Read(msg, &p)) { \
- (obj->*func)(*msg, p.a, p.b); \
+ (obj->*func)(parameter, p.a, p.b); \
return true; \
} \
return false; \
- } \
- template<typename TA, typename TB> \
- static bool Read(const IPC::Message* msg, TA* a, TB* b) { \
- Schema::Param p; \
- if (!Read(msg, &p)) \
- return false; \
- *a = p.a; \
- *b = p.b; \
- return true; \
}
#define IPC_ASYNC_MESSAGE_METHODS_3 \
IPC_ASYNC_MESSAGE_METHODS_GENERIC \
- template<class T, class S, typename TA, typename TB, typename TC> \
- static bool Dispatch(const Message* msg, T* obj, S* sender, \
- void (T::*func)(const Message&, TA, TB, TC)) { \
+ template<class T, class S, class P, typename TA, typename TB, typename TC> \
+ static bool Dispatch(const Message* msg, T* obj, S* sender, P* parameter, \
+ void (T::*func)(P*, TA, TB, TC)) { \
Schema::Param p; \
if (Read(msg, &p)) { \
- (obj->*func)(*msg, p.a, p.b, p.c); \
+ (obj->*func)(parameter, p.a, p.b, p.c); \
return true; \
} \
return false; \
- } \
- template<typename TA, typename TB, typename TC> \
- static bool Read(const IPC::Message* msg, TA* a, TB* b, TC* c) { \
- Schema::Param p; \
- if (!Read(msg, &p)) \
- return false; \
- *a = p.a; \
- *b = p.b; \
- *c = p.c; \
- return true; \
}
#define IPC_ASYNC_MESSAGE_METHODS_4 \
IPC_ASYNC_MESSAGE_METHODS_GENERIC \
- template<class T, class S, typename TA, typename TB, typename TC, \
+ template<class T, class S, class P, typename TA, typename TB, typename TC, \
typename TD> \
- static bool Dispatch(const Message* msg, T* obj, S* sender, \
- void (T::*func)(const Message&, TA, TB, TC, TD)) { \
+ static bool Dispatch(const Message* msg, T* obj, S* sender, P* parameter, \
+ void (T::*func)(P*, TA, TB, TC, TD)) { \
Schema::Param p; \
if (Read(msg, &p)) { \
- (obj->*func)(*msg, p.a, p.b, p.c, p.d); \
+ (obj->*func)(parameter, p.a, p.b, p.c, p.d); \
return true; \
} \
return false; \
- } \
- template<typename TA, typename TB, typename TC, typename TD> \
- static bool Read(const IPC::Message* msg, TA* a, TB* b, TC* c, TD* d) { \
- Schema::Param p; \
- if (!Read(msg, &p)) \
- return false; \
- *a = p.a; \
- *b = p.b; \
- *c = p.c; \
- *d = p.d; \
- return true; \
}
#define IPC_ASYNC_MESSAGE_METHODS_5 \
IPC_ASYNC_MESSAGE_METHODS_GENERIC \
- template<class T, class S, typename TA, typename TB, typename TC, \
+ template<class T, class S, class P, typename TA, typename TB, typename TC, \
typename TD, typename TE> \
- static bool Dispatch(const Message* msg, T* obj, S* sender, \
- void (T::*func)(const Message&, TA, TB, TC, TD, TE)) { \
+ static bool Dispatch(const Message* msg, T* obj, S* sender, P* parameter, \
+ void (T::*func)(P*, TA, TB, TC, TD, TE)) { \
Schema::Param p; \
if (Read(msg, &p)) { \
- (obj->*func)(*msg, p.a, p.b, p.c, p.d, p.e); \
+ (obj->*func)(parameter, p.a, p.b, p.c, p.d, p.e); \
return true; \
} \
return false; \
- } \
- template<typename TA, typename TB, typename TC, typename TD, typename TE> \
- static bool Read(const IPC::Message* msg, TA* a, TB* b, TC* c, TD* d, \
- TE* e) { \
- Schema::Param p; \
- if (!Read(msg, &p)) \
- return false; \
- *a = p.a; \
- *b = p.b; \
- *c = p.c; \
- *d = p.d; \
- *e = p.e; \
- return true; \
}
// The following macros define the common set of methods provided by SYNC
// message classes.
#define IPC_SYNC_MESSAGE_METHODS_GENERIC \
- template<class T, class S, class Method> \
- static bool Dispatch(const Message* msg, T* obj, S* sender, Method func) { \
+ template<class T, class S, class P, class Method> \
+ static bool Dispatch(const Message* msg, T* obj, S* sender, P* parameter, \
+ Method func) { \
Schema::SendParam send_params; \
bool ok = ReadSendParam(msg, &send_params); \
return Schema::DispatchWithSendParams(ok, send_params, msg, obj, sender, \
func); \
} \
- template<class T, class Method> \
- static bool DispatchDelayReply(const Message* msg, T* obj, Method func) { \
+ template<class T, class P, class Method> \
+ static bool DispatchDelayReply(const Message* msg, T* obj, P* parameter, \
+ Method func) { \
Schema::SendParam send_params; \
bool ok = ReadSendParam(msg, &send_params); \
return Schema::DispatchDelayReplyWithSendParams(ok, send_params, msg, \
@@ -932,24 +897,32 @@
#define IPC_BEGIN_MESSAGE_MAP_EX(class_name, msg, msg_is_ok) \
- { \
- typedef class_name _IpcMessageHandlerClass; \
- const IPC::Message& ipc_message__ = msg; \
- bool& msg_is_ok__ = msg_is_ok; \
- switch (ipc_message__.type()) { \
+ IPC_BEGIN_MESSAGE_MAP_WITH_PARAM(class_name, msg, msg_is_ok, void, NULL)
#define IPC_BEGIN_MESSAGE_MAP(class_name, msg) \
{ \
typedef class_name _IpcMessageHandlerClass; \
+ typedef void _ParamClass; \
+ _ParamClass* param__ = NULL; \
const IPC::Message& ipc_message__ = msg; \
bool msg_is_ok__ = true; \
switch (ipc_message__.type()) { \
+#define IPC_BEGIN_MESSAGE_MAP_WITH_PARAM(class_name, msg, msg_is_ok, \
+ param_type, param) \
+ { \
+ typedef class_name _IpcMessageHandlerClass; \
+ typedef param_type _ParamClass; \
+ _ParamClass* param__ = param; \
+ const IPC::Message& ipc_message__ = msg; \
+ bool& msg_is_ok__ = msg_is_ok; \
+ switch (ipc_message__.type()) { \
+
#define IPC_MESSAGE_FORWARD(msg_class, obj, member_func) \
case msg_class::ID: { \
TRACK_RUN_IN_IPC_HANDLER(member_func); \
msg_is_ok__ = msg_class::Dispatch(&ipc_message__, obj, this, \
- &member_func); \
+ param__, &member_func); \
} \
break;
@@ -960,7 +933,7 @@
case msg_class::ID: { \
TRACK_RUN_IN_IPC_HANDLER(member_func); \
msg_is_ok__ = msg_class::DispatchDelayReply(&ipc_message__, obj, \
- &member_func); \
+ param__, &member_func); \
} \
break;
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