context( context_fn sf, stack_allocator& alloc, fc::thread* t )
: caller_context(0),
stack_alloc(&alloc),
next_blocked(0),
next_blocked_mutex(0),
next(0),
ctx_thread(t),
canceled(false),
#ifndef NDEBUG
cancellation_reason(nullptr),
#endif
complete(false),
cur_task(0),
context_posted_num(0)
{
#if BOOST_VERSION >= 105600
size_t stack_size = FC_CONTEXT_STACK_SIZE;
alloc.allocate(stack_ctx, stack_size);
my_context = bc::make_fcontext( stack_ctx.sp, stack_ctx.size, sf);
#elif BOOST_VERSION >= 105400
size_t stack_size = FC_CONTEXT_STACK_SIZE;
alloc.allocate(stack_ctx, stack_size);
my_context = bc::make_fcontext( stack_ctx.sp, stack_ctx.size, sf);
#elif BOOST_VERSION >= 105300
size_t stack_size = FC_CONTEXT_STACK_SIZE;
void* stackptr = alloc.allocate(stack_size);
my_context = bc::make_fcontext( stackptr, stack_size, sf);
#else
size_t stack_size = FC_CONTEXT_STACK_SIZE;
my_context.fc_stack.base = alloc.allocate( stack_size );
my_context.fc_stack.limit = static_cast<char*>( my_context.fc_stack.base) - stack_size;
make_fcontext( &my_context, sf );
#endif
}
// Currently unsafe!
//
// gcFiber->entry will not be gc_marked until fiber is running...
//
int createFiber( Entry entry ){
Fiber *fiber=allocFiber();
if( !fiber ) return 0;
fiber->gcFiber->entry=entry;
fiber->fcontext=make_fcontext( fiber->stack+STACK_SIZE,STACK_SIZE,fiberEntry );
return fiber->id;
}
context( void (*sf)(intptr_t), bc::stack_allocator& alloc, fc::thread* t )
: caller_context(0),
stack_alloc(&alloc),
next_blocked(0),
next_blocked_mutex(0),
next(0),
ctx_thread(t),
canceled(false),
complete(false),
cur_task(0)
{
my_context.fc_stack.base = alloc.allocate( bc::default_stacksize() );
my_context.fc_stack.limit =
static_cast<char*>( my_context.fc_stack.base) - bc::default_stacksize();
make_fcontext( &my_context, sf );
}
// Safe!
//
int startFiber( Entry entry ){
Fiber *fiber=allocFiber();
if( !fiber ) return 0;
int id=fiber->id;
fiber->gcFiber->entry=entry;
fiber->fcontext=make_fcontext( fiber->stack+STACK_SIZE,STACK_SIZE,fiberEntry );
Fiber *curr=currFiber;
fiber->fcontext=jump_fcontext( fiber->fcontext,fiber ).fcontext;
setCurrFiber( curr );
return id;
}
