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/*
* BRLTTY - A background process providing access to the console screen (when in
* text mode) for a blind person using a refreshable braille display.
*
* Copyright (C) 1995-2018 by The BRLTTY Developers.
*
* BRLTTY comes with ABSOLUTELY NO WARRANTY.
*
* This is free software, placed under the terms of the
* GNU Lesser General Public License, as published by the Free Software
* Foundation; either version 2.1 of the License, or (at your option) any
* later version. Please see the file LICENSE-LGPL for details.
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*
* This software is maintained by Dave Mielke <dave@mielke.cc>.
*/
#include "prologue.h"
#include <errno.h>
#include <IOKit/IOKitLib.h>
#import <Foundation/NSLock.h>
#import <Foundation/NSThread.h>
#import <Foundation/NSAutoreleasePool.h>
#include "log.h"
#include "system.h"
#include "system_darwin.h"
static inline CFRunLoopRef
getRunLoop (void) {
return CFRunLoopGetCurrent();
}
static inline CFStringRef
getRunMode (void) {
return kCFRunLoopDefaultMode;
}
IOReturn
executeRunLoop (int seconds) {
return CFRunLoopRunInMode(getRunMode(), seconds, 1);
}
void
addRunLoopSource (CFRunLoopSourceRef source) {
CFRunLoopAddSource(getRunLoop(), source, getRunMode());
}
void
removeRunLoopSource (CFRunLoopSourceRef source) {
CFRunLoopRemoveSource(getRunLoop(), source, getRunMode());
}
void
setDarwinSystemError (IOReturn result) {
switch (result) {
default: errno = EIO; break;
//MAP_DARWIN_ERROR(KERN_SUCCESS, )
MAP_DARWIN_ERROR(KERN_INVALID_ADDRESS, EINVAL)
MAP_DARWIN_ERROR(KERN_PROTECTION_FAILURE, EFAULT)
MAP_DARWIN_ERROR(KERN_NO_SPACE, ENOSPC)
MAP_DARWIN_ERROR(KERN_INVALID_ARGUMENT, EINVAL)
//MAP_DARWIN_ERROR(KERN_FAILURE, )
MAP_DARWIN_ERROR(KERN_RESOURCE_SHORTAGE, EAGAIN)
//MAP_DARWIN_ERROR(KERN_NOT_RECEIVER, )
MAP_DARWIN_ERROR(KERN_NO_ACCESS, EACCES)
MAP_DARWIN_ERROR(KERN_MEMORY_FAILURE, EFAULT)
MAP_DARWIN_ERROR(KERN_MEMORY_ERROR, EFAULT)
//MAP_DARWIN_ERROR(KERN_ALREADY_IN_SET, )
//MAP_DARWIN_ERROR(KERN_NOT_IN_SET, )
MAP_DARWIN_ERROR(KERN_NAME_EXISTS, EEXIST)
MAP_DARWIN_ERROR(KERN_ABORTED, ECANCELED)
MAP_DARWIN_ERROR(KERN_INVALID_NAME, EINVAL)
MAP_DARWIN_ERROR(KERN_INVALID_TASK, EINVAL)
MAP_DARWIN_ERROR(KERN_INVALID_RIGHT, EINVAL)
MAP_DARWIN_ERROR(KERN_INVALID_VALUE, EINVAL)
//MAP_DARWIN_ERROR(KERN_UREFS_OVERFLOW, )
MAP_DARWIN_ERROR(KERN_INVALID_CAPABILITY, EINVAL)
//MAP_DARWIN_ERROR(KERN_RIGHT_EXISTS, )
MAP_DARWIN_ERROR(KERN_INVALID_HOST, EINVAL)
//MAP_DARWIN_ERROR(KERN_MEMORY_PRESENT, )
//MAP_DARWIN_ERROR(KERN_MEMORY_DATA_MOVED, )
//MAP_DARWIN_ERROR(KERN_MEMORY_RESTART_COPY, )
MAP_DARWIN_ERROR(KERN_INVALID_PROCESSOR_SET, EINVAL)
//MAP_DARWIN_ERROR(KERN_POLICY_LIMIT, )
MAP_DARWIN_ERROR(KERN_INVALID_POLICY, EINVAL)
MAP_DARWIN_ERROR(KERN_INVALID_OBJECT, EINVAL)
//MAP_DARWIN_ERROR(KERN_ALREADY_WAITING, )
//MAP_DARWIN_ERROR(KERN_DEFAULT_SET, )
//MAP_DARWIN_ERROR(KERN_EXCEPTION_PROTECTED, )
MAP_DARWIN_ERROR(KERN_INVALID_LEDGER, EINVAL)
MAP_DARWIN_ERROR(KERN_INVALID_MEMORY_CONTROL, EINVAL)
MAP_DARWIN_ERROR(KERN_INVALID_SECURITY, EINVAL)
//MAP_DARWIN_ERROR(KERN_NOT_DEPRESSED, )
//MAP_DARWIN_ERROR(KERN_TERMINATED, )
//MAP_DARWIN_ERROR(KERN_LOCK_SET_DESTROYED, )
//MAP_DARWIN_ERROR(KERN_LOCK_UNSTABLE, )
//MAP_DARWIN_ERROR(KERN_LOCK_OWNED, )
//MAP_DARWIN_ERROR(KERN_LOCK_OWNED_SELF, )
//MAP_DARWIN_ERROR(KERN_SEMAPHORE_DESTROYED, )
//MAP_DARWIN_ERROR(KERN_RPC_SERVER_TERMINATED, )
//MAP_DARWIN_ERROR(KERN_RPC_TERMINATE_ORPHAN, )
//MAP_DARWIN_ERROR(KERN_RPC_CONTINUE_ORPHAN, )
MAP_DARWIN_ERROR(KERN_NOT_SUPPORTED, ENOTSUP)
MAP_DARWIN_ERROR(KERN_NODE_DOWN, EHOSTDOWN)
//MAP_DARWIN_ERROR(KERN_NOT_WAITING, )
MAP_DARWIN_ERROR(KERN_OPERATION_TIMED_OUT, ETIMEDOUT)
MAP_DARWIN_ERROR(kIOReturnSuccess, 0)
//MAP_DARWIN_ERROR(kIOReturnError, )
MAP_DARWIN_ERROR(kIOReturnNoMemory, ENOMEM)
MAP_DARWIN_ERROR(kIOReturnNoResources, EAGAIN)
//MAP_DARWIN_ERROR(kIOReturnIPCError, )
MAP_DARWIN_ERROR(kIOReturnNoDevice, ENODEV)
MAP_DARWIN_ERROR(kIOReturnNotPrivileged, EACCES)
MAP_DARWIN_ERROR(kIOReturnBadArgument, EINVAL)
MAP_DARWIN_ERROR(kIOReturnLockedRead, ENOLCK)
MAP_DARWIN_ERROR(kIOReturnLockedWrite, ENOLCK)
MAP_DARWIN_ERROR(kIOReturnExclusiveAccess, EBUSY)
//MAP_DARWIN_ERROR(kIOReturnBadMessageID, )
MAP_DARWIN_ERROR(kIOReturnUnsupported, ENOTSUP)
//MAP_DARWIN_ERROR(kIOReturnVMError, )
//MAP_DARWIN_ERROR(kIOReturnInternalError, )
MAP_DARWIN_ERROR(kIOReturnIOError, EIO)
MAP_DARWIN_ERROR(kIOReturnCannotLock, ENOLCK)
MAP_DARWIN_ERROR(kIOReturnNotOpen, EBADF)
MAP_DARWIN_ERROR(kIOReturnNotReadable, EACCES)
MAP_DARWIN_ERROR(kIOReturnNotWritable, EROFS)
//MAP_DARWIN_ERROR(kIOReturnNotAligned, )
MAP_DARWIN_ERROR(kIOReturnBadMedia, ENXIO)
//MAP_DARWIN_ERROR(kIOReturnStillOpen, )
//MAP_DARWIN_ERROR(kIOReturnRLDError, )
MAP_DARWIN_ERROR(kIOReturnDMAError, EDEVERR)
MAP_DARWIN_ERROR(kIOReturnBusy, EBUSY)
MAP_DARWIN_ERROR(kIOReturnTimeout, ETIMEDOUT)
MAP_DARWIN_ERROR(kIOReturnOffline, ENXIO)
MAP_DARWIN_ERROR(kIOReturnNotReady, ENXIO)
MAP_DARWIN_ERROR(kIOReturnNotAttached, ENXIO)
MAP_DARWIN_ERROR(kIOReturnNoChannels, EDEVERR)
MAP_DARWIN_ERROR(kIOReturnNoSpace, ENOSPC)
MAP_DARWIN_ERROR(kIOReturnPortExists, EADDRINUSE)
MAP_DARWIN_ERROR(kIOReturnCannotWire, ENOMEM)
//MAP_DARWIN_ERROR(kIOReturnNoInterrupt, )
MAP_DARWIN_ERROR(kIOReturnNoFrames, EDEVERR)
MAP_DARWIN_ERROR(kIOReturnMessageTooLarge, EMSGSIZE)
MAP_DARWIN_ERROR(kIOReturnNotPermitted, EPERM)
MAP_DARWIN_ERROR(kIOReturnNoPower, EPWROFF)
MAP_DARWIN_ERROR(kIOReturnNoMedia, ENXIO)
MAP_DARWIN_ERROR(kIOReturnUnformattedMedia, ENXIO)
MAP_DARWIN_ERROR(kIOReturnUnsupportedMode, ENOSYS)
MAP_DARWIN_ERROR(kIOReturnUnderrun, EDEVERR)
MAP_DARWIN_ERROR(kIOReturnOverrun, EDEVERR)
MAP_DARWIN_ERROR(kIOReturnDeviceError, EDEVERR)
//MAP_DARWIN_ERROR(kIOReturnNoCompletion, )
MAP_DARWIN_ERROR(kIOReturnAborted, ECANCELED)
MAP_DARWIN_ERROR(kIOReturnNoBandwidth, EDEVERR)
MAP_DARWIN_ERROR(kIOReturnNotResponding, EDEVERR)
MAP_DARWIN_ERROR(kIOReturnIsoTooOld, EDEVERR)
MAP_DARWIN_ERROR(kIOReturnIsoTooNew, EDEVERR)
MAP_DARWIN_ERROR(kIOReturnNotFound, ENOENT)
//MAP_DARWIN_ERROR(kIOReturnInvalid, )
}
}
void
initializeSystemObject (void) {
}
@interface AsynchronousResult ()
@property (assign, readwrite) int isFinished;
@property (assign, readwrite) IOReturn finalStatus;
@end
@implementation AsynchronousResult
@synthesize isFinished;
@synthesize finalStatus;
- (int) wait
: (int) timeout
{
if (self.isFinished) return 1;
while (1) {
IOReturn result = executeRunLoop(timeout);
if (self.isFinished) return 1;
if (result == kCFRunLoopRunHandledSource) continue;
if (result == kCFRunLoopRunTimedOut) return 0;
}
}
- (void) setStatus
: (IOReturn) status
{
self.finalStatus = status;
self.isFinished = 1;
}
@end
@interface AsynchronousTask ()
@property (assign, readwrite) NSThread *taskThread;
@property (assign, readwrite) CFRunLoopRef taskRunLoop;
@property (retain) NSCondition *startSynchronizer;
@property (retain) NSThread *resultThread;
- (void) taskFinished;
- (void) main;
- (void) endTask;
@end
@implementation AsynchronousTask
@synthesize taskThread;
@synthesize taskRunLoop;
@synthesize startSynchronizer;
@synthesize resultThread;
- (IOReturn) run
{
logMessage(LOG_WARNING, "run method not overridden");
return kIOReturnSuccess;
}
- (void) taskFinished
{
self.resultThread = nil;
}
- (void) main
{
NSAutoreleasePool *pool = [NSAutoreleasePool new];
[self.startSynchronizer lock];
self.taskThread = [NSThread currentThread];
self.taskRunLoop = CFRunLoopGetCurrent();
[self.startSynchronizer signal];
[self.startSynchronizer unlock];
[self setStatus:[self run]];
[self performSelector:@selector(taskFinished) onThread:self.resultThread withObject:nil waitUntilDone:0];
self.taskThread = nil;
[pool drain];
}
- (int) start
{
if ((self.startSynchronizer = [NSCondition new])) {
self.resultThread = [NSThread currentThread];
[self.startSynchronizer lock];
[NSThread detachNewThreadSelector:@selector(main) toTarget:self withObject:nil];
[self.startSynchronizer wait];
[self.startSynchronizer unlock];
self.startSynchronizer = nil;
return 1;
}
return 0;
}
- (void) endTask
{
CFRunLoopStop(self.taskRunLoop);
}
- (void) stop
{
[self performSelector:@selector(endTask) onThread:self.taskThread withObject:nil waitUntilDone:0];
}
@end