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liuliu/special_invoke.c

Created December 26, 2019 21:50
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special_invoke.c
typedef void (*dispatch_f)(void*, ...);
dispatch_f dispatch_block_special_invoke()
{
static dispatch_once_t onceToken;
static dispatch_f f;
dispatch_once(&onceToken, ^{
f = (__bridge struct Block_layout *)dispatch_block_create(DISPATCH_BLOCK_INHERIT_QOS_CLASS, ^{})->invoke;
});
return f;
}
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