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Ladybird/Android: Add EventLoopImplementation for ALooper

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Timers run in their own thread, to take advantage of existing Java
Executor features. By hooking into ALooper, we can spin the main
Activity's UI thread event loop without causing a fuss, or spinning the
CPU by just polling our event loop constantly.
This commit is contained in:
Andrew Kaster
2023-09-08 22:12:42 -06:00
committed by Andrew Kaster
parent d63fb8fa61
commit d93911928b
11 changed files with 510 additions and 40 deletions
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34
Ladybird/Android/src/main/cpp/WebViewImplementationNative.cpp
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@@ -4,6 +4,7 @@
* SPDX-License-Identifier: BSD-2-Clause
*/
#include "JNIHelpers.h"
#include <Userland/Libraries/LibGfx/Bitmap.h>
#include <Userland/Libraries/LibGfx/Painter.h>
#include <Userland/Libraries/LibWeb/Crypto/Crypto.h>
@@ -24,39 +25,6 @@ Gfx::BitmapFormat to_gfx_bitmap_format(i32 f)
}
}
class JavaEnvironment {
public:
JavaEnvironment(JavaVM* vm)
: m_vm(vm)
{
auto ret = m_vm->GetEnv(reinterpret_cast<void**>(&m_env), JNI_VERSION_1_6);
if (ret == JNI_EDETACHED) {
ret = m_vm->AttachCurrentThread(&m_env, nullptr);
VERIFY(ret == JNI_OK);
m_did_attach_thread = true;
} else if (ret == JNI_EVERSION) {
VERIFY_NOT_REACHED();
} else {
VERIFY(ret == JNI_OK);
}
VERIFY(m_env != nullptr);
}
~JavaEnvironment()
{
if (m_did_attach_thread)
m_vm->DetachCurrentThread();
}
JNIEnv* get() const { return m_env; }
private:
JavaVM* m_vm = nullptr;
JNIEnv* m_env = nullptr;
bool m_did_attach_thread = false;
};
class WebViewImplementationNative : public WebView::ViewImplementation {
public:
WebViewImplementationNative(jobject thiz)