gecko-dev/storage/test/storage_test_harness.h

390 строки
11 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* vim: sw=2 ts=2 et lcs=trail\:.,tab\:>~ :
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "TestHarness.h"
#include "nsMemory.h"
#include "prthread.h"
#include "nsThreadUtils.h"
#include "nsDirectoryServiceDefs.h"
#include "mozilla/ReentrantMonitor.h"
#include "mozIStorageService.h"
#include "mozIStorageConnection.h"
#include "mozIStorageStatementCallback.h"
#include "mozIStorageCompletionCallback.h"
#include "mozIStorageBindingParamsArray.h"
#include "mozIStorageBindingParams.h"
#include "mozIStorageAsyncStatement.h"
#include "mozIStorageStatement.h"
#include "mozIStoragePendingStatement.h"
#include "mozIStorageError.h"
#include "nsIInterfaceRequestorUtils.h"
#include "nsIEventTarget.h"
#include "sqlite3.h"
static int gTotalTests = 0;
static int gPassedTests = 0;
#define do_check_true(aCondition) \
PR_BEGIN_MACRO \
gTotalTests++; \
if (aCondition) { \
gPassedTests++; \
} else { \
fail("%s | Expected true, got false at line %d", __FILE__, __LINE__); \
} \
PR_END_MACRO
#define do_check_false(aCondition) \
PR_BEGIN_MACRO \
gTotalTests++; \
if (!aCondition) { \
gPassedTests++; \
} else { \
fail("%s | Expected false, got true at line %d", __FILE__, __LINE__); \
} \
PR_END_MACRO
#define do_check_success(aResult) \
do_check_true(NS_SUCCEEDED(aResult))
#ifdef LINUX
// XXX Linux opt builds on tinderbox are orange due to linking with stdlib.
// This is sad and annoying, but it's a workaround that works.
#define do_check_eq(aExpected, aActual) \
do_check_true(aExpected == aActual)
#else
#include <sstream>
// Print nsresult as uint32_t
std::ostream& operator<<(std::ostream& aStream, const nsresult aInput)
{
return aStream << static_cast<uint32_t>(aInput);
}
#define do_check_eq(aExpected, aActual) \
PR_BEGIN_MACRO \
gTotalTests++; \
if (aExpected == aActual) { \
gPassedTests++; \
} else { \
std::ostringstream temp; \
temp << __FILE__ << " | Expected '" << aExpected << "', got '"; \
temp << aActual <<"' at line " << __LINE__; \
fail(temp.str().c_str()); \
} \
PR_END_MACRO
#endif
#define do_check_ok(aInvoc) do_check_true((aInvoc) == SQLITE_OK)
already_AddRefed<mozIStorageService>
getService()
{
nsCOMPtr<mozIStorageService> ss =
do_GetService("@mozilla.org/storage/service;1");
do_check_true(ss);
return ss.forget();
}
already_AddRefed<mozIStorageConnection>
getMemoryDatabase()
{
nsCOMPtr<mozIStorageService> ss = getService();
nsCOMPtr<mozIStorageConnection> conn;
nsresult rv = ss->OpenSpecialDatabase("memory", getter_AddRefs(conn));
do_check_success(rv);
return conn.forget();
}
already_AddRefed<mozIStorageConnection>
getDatabase()
{
nsCOMPtr<nsIFile> dbFile;
(void)NS_GetSpecialDirectory(NS_APP_USER_PROFILE_50_DIR,
getter_AddRefs(dbFile));
NS_ASSERTION(dbFile, "The directory doesn't exists?!");
nsresult rv = dbFile->Append(NS_LITERAL_STRING("storage_test_db.sqlite"));
do_check_success(rv);
nsCOMPtr<mozIStorageService> ss = getService();
nsCOMPtr<mozIStorageConnection> conn;
rv = ss->OpenDatabase(dbFile, getter_AddRefs(conn));
do_check_success(rv);
return conn.forget();
}
class AsyncStatementSpinner : public mozIStorageStatementCallback
, public mozIStorageCompletionCallback
{
public:
NS_DECL_ISUPPORTS
NS_DECL_MOZISTORAGESTATEMENTCALLBACK
NS_DECL_MOZISTORAGECOMPLETIONCALLBACK
AsyncStatementSpinner();
void SpinUntilCompleted();
uint16_t completionReason;
protected:
virtual ~AsyncStatementSpinner() {}
volatile bool mCompleted;
};
NS_IMPL_ISUPPORTS(AsyncStatementSpinner,
mozIStorageStatementCallback,
mozIStorageCompletionCallback)
AsyncStatementSpinner::AsyncStatementSpinner()
: completionReason(0)
, mCompleted(false)
{
}
NS_IMETHODIMP
AsyncStatementSpinner::HandleResult(mozIStorageResultSet *aResultSet)
{
return NS_OK;
}
NS_IMETHODIMP
AsyncStatementSpinner::HandleError(mozIStorageError *aError)
{
int32_t result;
nsresult rv = aError->GetResult(&result);
NS_ENSURE_SUCCESS(rv, rv);
nsAutoCString message;
rv = aError->GetMessage(message);
NS_ENSURE_SUCCESS(rv, rv);
nsAutoCString warnMsg;
warnMsg.AppendLiteral("An error occurred while executing an async statement: ");
warnMsg.AppendInt(result);
warnMsg.Append(' ');
warnMsg.Append(message);
NS_WARNING(warnMsg.get());
return NS_OK;
}
NS_IMETHODIMP
AsyncStatementSpinner::HandleCompletion(uint16_t aReason)
{
completionReason = aReason;
mCompleted = true;
return NS_OK;
}
NS_IMETHODIMP
AsyncStatementSpinner::Complete(nsresult, nsISupports*)
{
mCompleted = true;
return NS_OK;
}
void AsyncStatementSpinner::SpinUntilCompleted()
{
nsCOMPtr<nsIThread> thread(::do_GetCurrentThread());
nsresult rv = NS_OK;
bool processed = true;
while (!mCompleted && NS_SUCCEEDED(rv)) {
rv = thread->ProcessNextEvent(true, &processed);
}
}
#define NS_DECL_ASYNCSTATEMENTSPINNER \
NS_IMETHOD HandleResult(mozIStorageResultSet *aResultSet) override;
////////////////////////////////////////////////////////////////////////////////
//// Async Helpers
/**
* Execute an async statement, blocking the main thread until we get the
* callback completion notification.
*/
void
blocking_async_execute(mozIStorageBaseStatement *stmt)
{
nsRefPtr<AsyncStatementSpinner> spinner(new AsyncStatementSpinner());
nsCOMPtr<mozIStoragePendingStatement> pendy;
(void)stmt->ExecuteAsync(spinner, getter_AddRefs(pendy));
spinner->SpinUntilCompleted();
}
/**
* Invoke AsyncClose on the given connection, blocking the main thread until we
* get the completion notification.
*/
void
blocking_async_close(mozIStorageConnection *db)
{
nsRefPtr<AsyncStatementSpinner> spinner(new AsyncStatementSpinner());
db->AsyncClose(spinner);
spinner->SpinUntilCompleted();
}
////////////////////////////////////////////////////////////////////////////////
//// Mutex Watching
/**
* Verify that mozIStorageAsyncStatement's life-cycle never triggers a mutex on
* the caller (generally main) thread. We do this by decorating the sqlite
* mutex logic with our own code that checks what thread it is being invoked on
* and sets a flag if it is invoked on the main thread. We are able to easily
* decorate the SQLite mutex logic because SQLite allows us to retrieve the
* current function pointers being used and then provide a new set.
*/
sqlite3_mutex_methods orig_mutex_methods;
sqlite3_mutex_methods wrapped_mutex_methods;
bool mutex_used_on_watched_thread = false;
PRThread *watched_thread = nullptr;
/**
* Ugly hack to let us figure out what a connection's async thread is. If we
* were MOZILLA_INTERNAL_API and linked as such we could just include
* mozStorageConnection.h and just ask Connection directly. But that turns out
* poorly.
*
* When the thread a mutex is invoked on isn't watched_thread we save it to this
* variable.
*/
PRThread *last_non_watched_thread = nullptr;
/**
* Set a flag if the mutex is used on the thread we are watching, but always
* call the real mutex function.
*/
extern "C" void wrapped_MutexEnter(sqlite3_mutex *mutex)
{
PRThread *curThread = ::PR_GetCurrentThread();
if (curThread == watched_thread)
mutex_used_on_watched_thread = true;
else
last_non_watched_thread = curThread;
orig_mutex_methods.xMutexEnter(mutex);
}
extern "C" int wrapped_MutexTry(sqlite3_mutex *mutex)
{
if (::PR_GetCurrentThread() == watched_thread)
mutex_used_on_watched_thread = true;
return orig_mutex_methods.xMutexTry(mutex);
}
void hook_sqlite_mutex()
{
// We need to initialize and teardown SQLite to get it to set up the
// default mutex handlers for us so we can steal them and wrap them.
do_check_ok(sqlite3_initialize());
do_check_ok(sqlite3_shutdown());
do_check_ok(::sqlite3_config(SQLITE_CONFIG_GETMUTEX, &orig_mutex_methods));
do_check_ok(::sqlite3_config(SQLITE_CONFIG_GETMUTEX, &wrapped_mutex_methods));
wrapped_mutex_methods.xMutexEnter = wrapped_MutexEnter;
wrapped_mutex_methods.xMutexTry = wrapped_MutexTry;
do_check_ok(::sqlite3_config(SQLITE_CONFIG_MUTEX, &wrapped_mutex_methods));
}
/**
* Call to clear the watch state and to set the watching against this thread.
*
* Check |mutex_used_on_watched_thread| to see if the mutex has fired since
* this method was last called. Since we're talking about the current thread,
* there are no race issues to be concerned about
*/
void watch_for_mutex_use_on_this_thread()
{
watched_thread = ::PR_GetCurrentThread();
mutex_used_on_watched_thread = false;
}
////////////////////////////////////////////////////////////////////////////////
//// Thread Wedgers
/**
* A runnable that blocks until code on another thread invokes its unwedge
* method. By dispatching this to a thread you can ensure that no subsequent
* runnables dispatched to the thread will execute until you invoke unwedge.
*
* The wedger is self-dispatching, just construct it with its target.
*/
class ThreadWedger : public nsRunnable
{
public:
explicit ThreadWedger(nsIEventTarget *aTarget)
: mReentrantMonitor("thread wedger")
, unwedged(false)
{
aTarget->Dispatch(this, aTarget->NS_DISPATCH_NORMAL);
}
NS_IMETHOD Run()
{
mozilla::ReentrantMonitorAutoEnter automon(mReentrantMonitor);
if (!unwedged)
automon.Wait();
return NS_OK;
}
void unwedge()
{
mozilla::ReentrantMonitorAutoEnter automon(mReentrantMonitor);
unwedged = true;
automon.Notify();
}
private:
mozilla::ReentrantMonitor mReentrantMonitor;
bool unwedged;
};
////////////////////////////////////////////////////////////////////////////////
//// Async Helpers
/**
* A horrible hack to figure out what the connection's async thread is. By
* creating a statement and async dispatching we can tell from the mutex who
* is the async thread, PRThread style. Then we map that to an nsIThread.
*/
already_AddRefed<nsIThread>
get_conn_async_thread(mozIStorageConnection *db)
{
// Make sure we are tracking the current thread as the watched thread
watch_for_mutex_use_on_this_thread();
// - statement with nothing to bind
nsCOMPtr<mozIStorageAsyncStatement> stmt;
db->CreateAsyncStatement(
NS_LITERAL_CSTRING("SELECT 1"),
getter_AddRefs(stmt));
blocking_async_execute(stmt);
stmt->Finalize();
nsCOMPtr<nsIThreadManager> threadMan =
do_GetService("@mozilla.org/thread-manager;1");
nsCOMPtr<nsIThread> asyncThread;
threadMan->GetThreadFromPRThread(last_non_watched_thread,
getter_AddRefs(asyncThread));
// Additionally, check that the thread we get as the background thread is the
// same one as the one we report from getInterface.
nsCOMPtr<nsIEventTarget> target = do_GetInterface(db);
nsCOMPtr<nsIThread> allegedAsyncThread = do_QueryInterface(target);
PRThread *allegedPRThread;
(void)allegedAsyncThread->GetPRThread(&allegedPRThread);
do_check_eq(allegedPRThread, last_non_watched_thread);
return asyncThread.forget();
}