4fa12853ed
Both halves of the C2 contract already work in JIT and AOT; these examples pin them. 1635: libc qsort drives an sx callconv(.c) comparator passed by name as a typed fn-pointer param. 1636: a real pthread enters sx through a callconv(.c) entry, fabricates its own Context (push Context with a local GPA), and runs default-conv sx code that allocates through it — the re-entry contract std.thread (S6) stands on. Also unblocks the sqlite callback APIs (hooks/UDFs) left unbound by design in P5.1.
30 lines
1.1 KiB
Plaintext
30 lines
1.1 KiB
Plaintext
// PLAN-HTTPZ C2: the C->sx re-entry contract. A real OS thread enters
|
|
// sx through a `callconv(.c)` entry (which has NO implicit context),
|
|
// fabricates its own Context via `push Context.{ allocator = xx gpa }`,
|
|
// and calls default-conv sx code that allocates through it.
|
|
#import "modules/std.sx";
|
|
|
|
clib :: #library "c";
|
|
pthread_create :: (thread: *usize, attr: *void, start: (*void) -> *void callconv(.c), arg: *void) -> i32 #foreign clib;
|
|
pthread_join :: (thread: usize, retval: **void) -> i32 #foreign clib;
|
|
|
|
entry :: (arg: *void) -> *void callconv(.c) {
|
|
p : *i64 = xx arg;
|
|
gpa := GPA.init();
|
|
push Context.{ allocator = xx gpa } {
|
|
s := concat("th", "read"); // allocate through the thread's OWN context
|
|
if s.len == 6 { p.* = p.* * 2; }
|
|
}
|
|
return null;
|
|
}
|
|
|
|
main :: () -> i32 {
|
|
v : i64 = 21;
|
|
th : usize = 0;
|
|
if pthread_create(@th, null, entry, xx @v) != 0 { print("create failed\n"); return 1; }
|
|
pthread_join(th, null);
|
|
if v != 42 { print("wrong result: {}\n", v); return 1; }
|
|
print("pthread into sx ok: {}\n", v);
|
|
return 0;
|
|
}
|