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// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ppapi/proxy/ppb_core_proxy.h"
#include <stdint.h>
#include <stdlib.h> // For malloc
#include "base/check.h"
#include "base/functional/bind.h"
#include "base/time/time.h"
#include "base/trace_event/trace_event.h"
#include "build/build_config.h"
#include "ppapi/c/pp_completion_callback.h"
#include "ppapi/c/pp_resource.h"
#include "ppapi/c/ppb_core.h"
#include "ppapi/proxy/plugin_dispatcher.h"
#include "ppapi/proxy/plugin_resource_tracker.h"
#include "ppapi/proxy/ppapi_messages.h"
#include "ppapi/shared_impl/ppapi_globals.h"
#include "ppapi/shared_impl/proxy_lock.h"
#include "ppapi/shared_impl/time_conversion.h"
namespace ppapi {
namespace proxy {
namespace {
void AddRefResource(PP_Resource resource) {
ppapi::ProxyAutoLock lock;
PpapiGlobals::Get()->GetResourceTracker()->AddRefResource(resource);
}
void ReleaseResource(PP_Resource resource) {
ppapi::ProxyAutoLock lock;
PpapiGlobals::Get()->GetResourceTracker()->ReleaseResource(resource);
}
double GetTime() {
return TimeToPPTime(base::Time::Now());
}
double GetTimeTicks() {
return TimeTicksToPPTimeTicks(base::TimeTicks::Now());
}
void CallbackWrapper(PP_CompletionCallback callback, int32_t result) {
TRACE_EVENT2("ppapi_proxy", "CallOnMainThread callback", "Func",
reinterpret_cast<void*>(callback.func), "UserData",
callback.user_data);
CallWhileUnlocked(PP_RunCompletionCallback, &callback, result);
}
void CallOnMainThread(int delay_in_ms,
PP_CompletionCallback callback,
int32_t result) {
DCHECK(callback.func);
#if BUILDFLAG(IS_NACL)
// Some NaCl apps pass a negative delay, so we just sanitize to 0, to run as
// soon as possible. MessageLoop checks that the delay is non-negative.
if (delay_in_ms < 0)
delay_in_ms = 0;
#endif
if (!callback.func)
return;
ProxyAutoLock lock;
// If the plugin attempts to call CallOnMainThread from a background thread
// at shutdown, it's possible that the PpapiGlobals object or the main loop
// has been destroyed.
if (!PpapiGlobals::Get() || !PpapiGlobals::Get()->GetMainThreadMessageLoop())
return;
PpapiGlobals::Get()->GetMainThreadMessageLoop()->PostDelayedTask(
FROM_HERE,
RunWhileLocked(base::BindOnce(&CallbackWrapper, callback, result)),
base::Milliseconds(delay_in_ms));
}
PP_Bool IsMainThread() {
return PP_FromBool(PpapiGlobals::Get()->
GetMainThreadMessageLoop()->BelongsToCurrentThread());
}
const PPB_Core core_interface = {
&AddRefResource,
&ReleaseResource,
&GetTime,
&GetTimeTicks,
&CallOnMainThread,
&IsMainThread
};
} // namespace
PPB_Core_Proxy::PPB_Core_Proxy(Dispatcher* dispatcher)
: InterfaceProxy(dispatcher),
ppb_core_impl_(NULL) {
if (!dispatcher->IsPlugin()) {
ppb_core_impl_ = static_cast<const PPB_Core*>(
dispatcher->local_get_interface()(PPB_CORE_INTERFACE));
}
}
PPB_Core_Proxy::~PPB_Core_Proxy() {
}
// static
const PPB_Core* PPB_Core_Proxy::GetPPB_Core_Interface() {
return &core_interface;
}
bool PPB_Core_Proxy::OnMessageReceived(const IPC::Message& msg) {
#if BUILDFLAG(IS_NACL)
return false;
#else
bool handled = true;
IPC_BEGIN_MESSAGE_MAP(PPB_Core_Proxy, msg)
IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBCore_AddRefResource,
OnMsgAddRefResource)
IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBCore_ReleaseResource,
OnMsgReleaseResource)
IPC_MESSAGE_UNHANDLED(handled = false)
IPC_END_MESSAGE_MAP()
// TODO(brettw) handle bad messages!
return handled;
#endif
}
#if !BUILDFLAG(IS_NACL)
void PPB_Core_Proxy::OnMsgAddRefResource(const HostResource& resource) {
ppb_core_impl_->AddRefResource(resource.host_resource());
}
void PPB_Core_Proxy::OnMsgReleaseResource(const HostResource& resource) {
ppb_core_impl_->ReleaseResource(resource.host_resource());
}
#endif // !BUILDFLAG(IS_NACL)
} // namespace proxy
} // namespace ppapi
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