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/*
* Main entry of app process.
*
* Starts the interpreted runtime, then starts up the application.
*
*/
#define LOG_TAG "appproc"
#include <binder/IPCThreadState.h>
#include <binder/ProcessState.h>
#include <utils/Log.h>
#include <cutils/process_name.h>
#include <cutils/memory.h>
#include <android_runtime/AndroidRuntime.h>
#include <stdio.h>
#include <unistd.h>
namespace android {
void app_usage()
{
fprintf(stderr,
"Usage: app_process [java-options] cmd-dir start-class-name [options]\n");
}
status_t app_init(const char* className, int argc, const char* const argv[])
{
LOGV("Entered app_init()!\n");
AndroidRuntime* jr = AndroidRuntime::getRuntime();
jr->callMain(className, argc, argv);
LOGV("Exiting app_init()!\n");
return NO_ERROR;
}
class AppRuntime : public AndroidRuntime
{
public:
AppRuntime()
: mParentDir(NULL)
, mClassName(NULL)
, mArgC(0)
, mArgV(NULL)
{
}
#if 0
// this appears to be unused
const char* getParentDir() const
{
return mParentDir;
}
#endif
const char* getClassName() const
{
return mClassName;
}
virtual void onStarted()
{
sp<ProcessState> proc = ProcessState::self();
if (proc->supportsProcesses()) {
LOGV("App process: starting thread pool.\n");
proc->startThreadPool();
}
app_init(mClassName, mArgC, mArgV);
if (ProcessState::self()->supportsProcesses()) {
IPCThreadState::self()->stopProcess();
}
}
virtual void onZygoteInit()
{
sp<ProcessState> proc = ProcessState::self();
if (proc->supportsProcesses()) {
LOGV("App process: starting thread pool.\n");
proc->startThreadPool();
}
}
virtual void onExit(int code)
{
if (mClassName == NULL) {
// if zygote
if (ProcessState::self()->supportsProcesses()) {
IPCThreadState::self()->stopProcess();
}
}
AndroidRuntime::onExit(code);
}
const char* mParentDir;
const char* mClassName;
int mArgC;
const char* const* mArgV;
};
}
using namespace android;
/*
* sets argv0 to as much of newArgv0 as will fit
*/
static void setArgv0(const char *argv0, const char *newArgv0)
{
strlcpy(const_cast<char *>(argv0), newArgv0, strlen(argv0));
}
int main(int argc, const char* const argv[])
{
// These are global variables in ProcessState.cpp
mArgC = argc;
mArgV = argv;
mArgLen = 0;
for (int i=0; i<argc; i++) {
mArgLen += strlen(argv[i]) + 1;
}
mArgLen--;
AppRuntime runtime;
const char *arg;
const char *argv0;
argv0 = argv[0];
// Process command line arguments
// ignore argv[0]
argc--;
argv++;
// Everything up to '--' or first non '-' arg goes to the vm
int i = runtime.addVmArguments(argc, argv);
// Next arg is parent directory
if (i < argc) {
runtime.mParentDir = argv[i++];
}
// Next arg is startup classname or "--zygote"
if (i < argc) {
arg = argv[i++];
if (0 == strcmp("--zygote", arg)) {
bool startSystemServer = (i < argc) ?
strcmp(argv[i], "--start-system-server") == 0 : false;
setArgv0(argv0, "zygote");
set_process_name("zygote");
runtime.start("com.android.internal.os.ZygoteInit",
startSystemServer);
} else {
set_process_name(argv0);
runtime.mClassName = arg;
// Remainder of args get passed to startup class main()
runtime.mArgC = argc-i;
runtime.mArgV = argv+i;
LOGV("App process is starting with pid=%d, class=%s.\n",
getpid(), runtime.getClassName());
runtime.start();
}
} else {
LOG_ALWAYS_FATAL("app_process: no class name or --zygote supplied.");
fprintf(stderr, "Error: no class name or --zygote supplied.\n");
app_usage();
return 10;
}
}
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