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intrinsics: Eliminate recv intrinsic

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This intrinsic existed just to get ahold of the return pointer. I replaced it
with a call_with_retptr intrinsic that grabs the return pointer and passes it
to another Rust function, thereby eliminating the need to call C functions on
the Rust stack.
This commit is contained in:
Brian Anderson
2011-11-18 12:39:13 -08:00
parent 93931311ff
commit 3a6320f71b
5 changed files with 102 additions and 62 deletions
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8
src/rt/rust_builtin.cpp
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@@ -515,10 +515,8 @@ rust_task_sleep(rust_task *task, size_t time_in_us) {
task->yield(time_in_us);
}
// This is called by an intrinsic on the Rust stack.
// Do not call on the C stack.
extern "C" CDECL void
port_recv(uintptr_t *dptr, rust_port *port) {
port_recv(uintptr_t *dptr, rust_port *port, uintptr_t *yield) {
rust_task *task = rust_scheduler::get_task();
{
scoped_lock with(port->lock);
@@ -528,6 +526,7 @@ port_recv(uintptr_t *dptr, rust_port *port) {
(uintptr_t) port, (uintptr_t) dptr, port->unit_sz);
if (port->receive(dptr)) {
*yield = false;
return;
}
@@ -539,7 +538,8 @@ port_recv(uintptr_t *dptr, rust_port *port) {
task->rendezvous_ptr = dptr;
task->block(port, "waiting for rendezvous data");
}
task->yield(3);
*yield = true;
return;
}
//