You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
139 lines
3.9 KiB
139 lines
3.9 KiB
/*
|
|
* Copyright (C) 2016 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 <cstdint>
|
|
#include <dlfcn.h>
|
|
|
|
extern "C" {
|
|
|
|
#include "qsh_na_api.h"
|
|
|
|
} // extern "C"
|
|
|
|
#include "chre/core/event_loop_manager.h"
|
|
#include "chre/core/nanoapp.h"
|
|
#include "chre/platform/assert.h"
|
|
#include "chre/platform/log.h"
|
|
#include "chre/platform/memory.h"
|
|
#include "chre/platform/slpi/qsh/qsh_shim.h"
|
|
#include "chre/sensor.h"
|
|
#include "chre/util/macros.h"
|
|
|
|
namespace chre {
|
|
namespace {
|
|
|
|
//! Function pointer to store QSH's version of chreSensorFlushAsync
|
|
decltype(chreSensorFlushAsync) *gFlushFuncPtr = nullptr;
|
|
|
|
/*
|
|
* Used by QSH to obtain the currently running nanoapp instance ID when nanoapps
|
|
* invoke CHRE APIs implemented by its shim.
|
|
*/
|
|
bool getCurrentNanoappInstanceId(uint32_t *nanoappInstId) {
|
|
CHRE_ASSERT(nanoappInstId != nullptr);
|
|
if (nanoappInstId == nullptr) {
|
|
return false;
|
|
}
|
|
|
|
bool success = false;
|
|
Nanoapp *currentNanoapp =
|
|
EventLoopManagerSingleton::get()->getEventLoop().getCurrentNanoapp();
|
|
if (currentNanoapp == nullptr) {
|
|
LOGE("No nanoapp currently executing");
|
|
} else {
|
|
*nanoappInstId = currentNanoapp->getInstanceId();
|
|
success = true;
|
|
}
|
|
return success;
|
|
}
|
|
|
|
/*
|
|
* Used by QSH to post events to the CHRE event loop. The caller continues to
|
|
* own the event pointer after returning so a copy must be made of the data.
|
|
*/
|
|
bool postEventFromQsh(uint16_t eventType, void *event, uint32_t eventLen,
|
|
uint32_t nanoappInstId) {
|
|
// Default success to true if the event is empty since an empty event can
|
|
// still be sent to CHRE.
|
|
bool success = false;
|
|
void *eventCopy = nullptr;
|
|
if (eventLen == 0) {
|
|
CHRE_ASSERT(event == nullptr);
|
|
if (event != nullptr) {
|
|
LOGE("Event len 0 with non-null event data");
|
|
} else {
|
|
success = true;
|
|
}
|
|
} else {
|
|
CHRE_ASSERT(event != nullptr);
|
|
if (event != nullptr) {
|
|
eventCopy = memoryAlloc(eventLen);
|
|
if (eventCopy == nullptr) {
|
|
LOG_OOM();
|
|
} else {
|
|
memcpy(eventCopy, event, eventLen);
|
|
success = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (success) {
|
|
EventLoopManagerSingleton::get()->getEventLoop().postEventOrDie(
|
|
eventType, eventCopy, freeEventDataCallback, nanoappInstId);
|
|
}
|
|
return success;
|
|
}
|
|
|
|
const qsh_na_api_callbacks gQshCallbacks = {
|
|
getCurrentNanoappInstanceId, /* get_current_nanoapp_inst_id */
|
|
postEventFromQsh, /* post_event */
|
|
};
|
|
|
|
} // anonymous namespace
|
|
|
|
void openQsh() {
|
|
if (!qsh_na_open(&gQshCallbacks)) {
|
|
LOGE("QSH failed to open");
|
|
} else {
|
|
LOGI("QSH opened");
|
|
gFlushFuncPtr = reinterpret_cast<decltype(gFlushFuncPtr)>(
|
|
dlsym(RTLD_NEXT, STRINGIFY(chreSensorFlushAsync)));
|
|
if (gFlushFuncPtr == nullptr) {
|
|
LOGE("Flush function not found!");
|
|
}
|
|
}
|
|
}
|
|
|
|
void closeQsh() {
|
|
qsh_na_close();
|
|
}
|
|
|
|
} // namespace chre
|
|
|
|
// Define the delete operator so that SLPI doesn't have to expose this symbol
|
|
// since CHRE will never call it directly
|
|
void operator delete (void* ptr) noexcept {
|
|
free(ptr);
|
|
}
|
|
|
|
// Export the chreSensorFlushAsync symbol from CHRE and then used the previously
|
|
// looked up symbol to WAR loader issue where nanoapps can't see QSH symbols.
|
|
DLL_EXPORT extern "C" bool chreSensorFlushAsync(uint32_t sensorHandle,
|
|
const void *cookie) {
|
|
return (chre::gFlushFuncPtr != nullptr)
|
|
? chre::gFlushFuncPtr(sensorHandle, cookie)
|
|
: false;
|
|
} |