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FFTThread.m
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148 lines (120 loc) · 2.96 KB
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//
// FFTThread.m
// FFmpegTutorial
//
// Created by Matt Reach on 2020/6/2.
//
//
// [self performSelector:@selector(bye) onThread:self.thread withObject:nil waitUntilDone:YES]; -> _pthread_cond_wait ; cause dead lock！
#import "FFTThread.h"
#define PRINT_THREAD_LOG_ON 1
#if PRINT_THREAD_LOG_ON
#define PRINT_THREAD_DEBUG(_msg_) \
do{ \
NSLog(@"[t] [%@] %@",self.name,_msg_); \
}while(0)
#else
#define PRINT_THREAD_DEBUG(_msg_) \
do{ \
}while(0)
#endif
@interface FFTThread ()
@property (nonatomic, weak) id threadTarget;
@property (nonatomic, strong) NSThread *thread;
@property (nonatomic, assign) SEL threadSelector;//实际调度任务
@property (nonatomic, strong) id threadArgs;
@property (nonatomic, copy) void(^workBlock)(void);
@property (nonatomic, strong) NSCondition *condition;
@end
@implementation FFTThread
- (void)dealloc
{
PRINT_THREAD_DEBUG(@"dealloc");
}
- (instancetype)init
{
self = [super init];
if (self) {
self.condition = [NSCondition new];
self.thread = [[NSThread alloc] initWithTarget:self selector:@selector(workFunc) object:nil];
}
return self;
}
- (instancetype)initWithTarget:(id)target selector:(SEL)selector object:(nullable id)argument
{
self = [self init];
if (self) {
self.threadTarget = target;
self.threadSelector = selector;
self.threadArgs = argument;
}
return self;
}
- (instancetype)initWithBlock:(void (^)(void))block
{
self = [self init];
if (self) {
self.workBlock = block;
}
return self;
}
- (void)setName:(NSString *)name
{
[self.thread setName:name];
}
- (NSString *)name
{
return self.thread.name;
}
- (void)workFunc
{
//取消了就直接返回，不再处理
if ([self isCanceled]) {
return;
}
// iOS 子线程需要显式创建 autoreleasepool 以释放 autorelease 对象
@autoreleasepool {
if ([self.threadTarget respondsToSelector:self.threadSelector]) {
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Warc-performSelector-leaks"
[self.threadTarget performSelector:self.threadSelector withObject:self.threadArgs];
#pragma clang diagnostic pop
}
if (self.workBlock) {
self.workBlock();
}
PRINT_THREAD_DEBUG(@"signal.");
[self.condition signal];
}
}
- (void)start
{
[self.thread start];
}
- (void)join
{
while (![self.thread isFinished] && [self.thread isExecuting]) {
PRINT_THREAD_DEBUG(@"wait.");
BOOL ok = [self.condition waitUntilDate:[NSDate dateWithTimeIntervalSinceNow:0.01]];
if (ok) {
PRINT_THREAD_DEBUG(@"break wait.");
break;
}
}
PRINT_THREAD_DEBUG(@"joined.");
}
- (void)cancel
{
if (![self.thread isCancelled]) {
[self.thread cancel];
}
}
- (BOOL)isCanceled
{
return [self.thread isCancelled];
}
- (BOOL)isFinished
{
return [self.thread isFinished];
}
@end