feat: std.http pooled handler dispatch (PLAN-HTTPZ S7b)

thread_pool_count = 0 (default) keeps handlers inline on the loop
thread — the measured fast path (BENCH-HTTPZ.md). N > 0 dispatches
each parsed request to a std.thread Pool of N workers, completing the
httpz two-pool shape: the connection freezes as CONN_HANDLING (no
reads, growth, eviction, or recycling — the worker borrows views into
its read buffer), the worker runs the handler under a per-job arena
and serializes into job-owned bytes, the completion queues under the
PoolState mutex, and the loop wakes through the new std.event wake
channel (kqueue EVFILT_USER + EV_CLEAR; the epoll twin maps to
eventfd), attaches the response, compacts the buffer, and resumes
keep-alive/pipeline handling. A full backlog sheds with 503. Stale
completions (generation mismatch after close) are dropped. Pool mode
requires the server's constructing allocator to be thread-safe
(GPA/malloc), documented on the knob.

PoolState lives behind a heap pointer (it embeds a Mutex and is shared
with workers; the Server struct itself is returned by value).
serialize_response/run_handler_job share one serialize_bytes.

examples/1633 gains the pooled section (GET, body echo, 404 across
worker threads) plus the loop-wake path exercised end to end; AOT run
five times. examples/1632 unchanged but the Event struct gains `user`.

examples/1633-http-server.sx

@@ -39,18 +39,22 @@ contains :: (hay: string, needle: string) -> bool {
 }
 
 // Connect a nonblocking loopback client.
-dial :: () -> i32 {
+dial_port :: (port: i64) -> i32 {
     fd := socket.socket(socket.AF_INET, socket.SOCK_STREAM, 0);
     if fd < 0 { return -1; }
     addr : socket.SockAddr = .{
         sin_len = 16, sin_family = xx socket.AF_INET,
-        sin_port = socket.htons(PORT), sin_addr = 0x0100007F,
+        sin_port = socket.htons(port), sin_addr = 0x0100007F,
     };
     if socket.connect(fd, @addr, 16) != 0 { socket.close(fd); return -1; }
     if !socket.set_nonblocking(fd) { socket.close(fd); return -1; }
     return fd;
 }
 
+dial :: () -> i32 {
+    return dial_port(PORT);
+}
+
 // True when `buf[0..len]` holds a complete response (headers + body).
 resp_complete :: (buf: [*]u8, len: i64) -> bool {
     s := string.{ ptr = buf, len = xx len };
@@ -210,6 +214,36 @@ main :: () -> i32 {
     print("slow client evicted, healthy client served\n");
 
     srv.close();
+
+    // ── pooled dispatch (S7b): same contract through worker threads ──
+    // thread_pool_count > 0 runs handlers on a pool; completions come
+    // back through the loop's wake channel. Same assertions: routing,
+    // body echo, keep-alive reuse — now crossing threads per request.
+    pcfg : http.Config = .{
+        port = PORT + 1,
+        timeout_request_ms = 1000,
+        timeout_keepalive_ms = 1000,
+        request_count = 50,
+        max_conn = 8,
+        thread_pool_count = 2,
+        thread_pool_backlog = 16,
+    };
+    psrv, pse := http.Server.init(pcfg, handler, 77);
+    if pse { print("pooled server init failed\n"); return 1; }
+
+    c5 := dial_port(PORT + 1);
+    if c5 < 0 { print("dial5 failed\n"); return 1; }
+    r7 := roundtrip(@psrv, c5, "GET /hello HTTP/1.1\r\nHost: t\r\n\r\n", @buf[0]);
+    if !contains(r7, "HTTP/1.1 200 OK") { print("pooled: bad status\n"); return 1; }
+    if !contains(r7, "hello GET") { print("pooled: bad body\n"); return 1; }
+    r8 := roundtrip(@psrv, c5, "POST /echo HTTP/1.1\r\nHost: t\r\nContent-Length: 9\r\n\r\nping-pong", @buf[0]);
+    if !contains(r8, "ping-pong") { print("pooled: echo failed\n"); return 1; }
+    r9 := roundtrip(@psrv, c5, "GET /missing HTTP/1.1\r\nHost: t\r\n\r\n", @buf[0]);
+    if !contains(r9, "HTTP/1.1 404 Not Found") { print("pooled: expected 404\n"); return 1; }
+    socket.close(c5);
+    psrv.close();
+    print("pooled dispatch: GET, echo, 404 across worker threads ok\n");
+
     print("http server ok\n");
     return 0;
 }

examples/expected/1202-ffi-cc-c-large-aggregate.ir

@@ -875,6 +875,12 @@ declare i32 @Loop.add_write(ptr, ptr, i32, i64) #0
 ; Function Attrs: nounwind
 declare void @Loop.del_write(ptr, ptr, i32) #0
 
+; Function Attrs: nounwind
+declare i32 @Loop.add_wake(ptr, ptr, i64) #0
+
+; Function Attrs: nounwind
+declare void @Loop.wake(ptr, ptr) #0
+
 ; Function Attrs: nounwind
 declare [2 x i64] @Loop.wait(ptr, ptr, ptr, i64) #0
 
@@ -897,7 +903,13 @@ declare i1 @ascii_ieq(ptr, ptr, ptr) #0
 declare ptr @reason_for(ptr, i64) #0
 
 ; Function Attrs: nounwind
-declare void @Server.init(ptr sret({ { { i64, i32, i64, i64, i64, i64, i64 }, { i32 }, i32, ptr, { ptr, ptr, ptr }, ptr, i64 }, i32 }), ptr, ptr, ptr, i64) #0
+declare void @run_handler_job(ptr, i64) #0
+
+; Function Attrs: nounwind
+declare [2 x i64] @serialize_bytes(ptr, ptr, i1, ptr) #0
+
+; Function Attrs: nounwind
+declare void @Server.init(ptr sret({ { { i64, i32, i64, i64, i64, i64, i64, i64, i64 }, { i32 }, i32, ptr, { ptr, ptr, ptr }, ptr, i64, ptr }, i32 }), ptr, ptr, ptr, i64) #0
 
 ; Function Attrs: nounwind
 declare void @Server.close(ptr, ptr) #0
@@ -932,6 +944,9 @@ declare i1 @Server.try_serve_one(ptr, ptr, i64) #0
 ; Function Attrs: nounwind
 declare void @Server.serialize_response(ptr, ptr, i64, ptr, i1) #0
 
+; Function Attrs: nounwind
+declare void @Server.drain_completions(ptr, ptr) #0
+
 ; Function Attrs: nounwind
 declare void @Server.write_more(ptr, ptr, i64) #0
 

examples/expected/1309-ffi-objc-class-method-lowering.ir

@@ -1367,6 +1367,12 @@ declare i32 @Loop.add_write(ptr, ptr, i32, i64) #0
 ; Function Attrs: nounwind
 declare void @Loop.del_write(ptr, ptr, i32) #0
 
+; Function Attrs: nounwind
+declare i32 @Loop.add_wake(ptr, ptr, i64) #0
+
+; Function Attrs: nounwind
+declare void @Loop.wake(ptr, ptr) #0
+
 ; Function Attrs: nounwind
 declare [2 x i64] @Loop.wait(ptr, ptr, ptr, i64) #0
 
@@ -1389,7 +1395,13 @@ declare i1 @ascii_ieq(ptr, ptr, ptr) #0
 declare ptr @reason_for(ptr, i64) #0
 
 ; Function Attrs: nounwind
-declare void @Server.init(ptr sret({ { { i64, i32, i64, i64, i64, i64, i64 }, { i32 }, i32, ptr, { ptr, ptr, ptr }, ptr, i64 }, i32 }), ptr, ptr, ptr, i64) #0
+declare void @run_handler_job(ptr, i64) #0
+
+; Function Attrs: nounwind
+declare [2 x i64] @serialize_bytes(ptr, ptr, i1, ptr) #0
+
+; Function Attrs: nounwind
+declare void @Server.init(ptr sret({ { { i64, i32, i64, i64, i64, i64, i64, i64, i64 }, { i32 }, i32, ptr, { ptr, ptr, ptr }, ptr, i64, ptr }, i32 }), ptr, ptr, ptr, i64) #0
 
 ; Function Attrs: nounwind
 declare void @Server.close(ptr, ptr) #0
@@ -1424,6 +1436,9 @@ declare i1 @Server.try_serve_one(ptr, ptr, i64) #0
 ; Function Attrs: nounwind
 declare void @Server.serialize_response(ptr, ptr, i64, ptr, i1) #0
 
+; Function Attrs: nounwind
+declare void @Server.drain_completions(ptr, ptr) #0
+
 ; Function Attrs: nounwind
 declare void @Server.write_more(ptr, ptr, i64) #0
 

examples/expected/1314-ffi-objc-class-dealloc-roundtrip.ir

@@ -1383,6 +1383,12 @@ declare i32 @Loop.add_write(ptr, ptr, i32, i64) #0
 ; Function Attrs: nounwind
 declare void @Loop.del_write(ptr, ptr, i32) #0
 
+; Function Attrs: nounwind
+declare i32 @Loop.add_wake(ptr, ptr, i64) #0
+
+; Function Attrs: nounwind
+declare void @Loop.wake(ptr, ptr) #0
+
 ; Function Attrs: nounwind
 declare [2 x i64] @Loop.wait(ptr, ptr, ptr, i64) #0
 
@@ -1405,7 +1411,13 @@ declare i1 @ascii_ieq(ptr, ptr, ptr) #0
 declare ptr @reason_for(ptr, i64) #0
 
 ; Function Attrs: nounwind
-declare void @Server.init(ptr sret({ { { i64, i32, i64, i64, i64, i64, i64 }, { i32 }, i32, ptr, { ptr, ptr, ptr }, ptr, i64 }, i32 }), ptr, ptr, ptr, i64) #0
+declare void @run_handler_job(ptr, i64) #0
+
+; Function Attrs: nounwind
+declare [2 x i64] @serialize_bytes(ptr, ptr, i1, ptr) #0
+
+; Function Attrs: nounwind
+declare void @Server.init(ptr sret({ { { i64, i32, i64, i64, i64, i64, i64, i64, i64 }, { i32 }, i32, ptr, { ptr, ptr, ptr }, ptr, i64, ptr }, i32 }), ptr, ptr, ptr, i64) #0
 
 ; Function Attrs: nounwind
 declare void @Server.close(ptr, ptr) #0
@@ -1440,6 +1452,9 @@ declare i1 @Server.try_serve_one(ptr, ptr, i64) #0
 ; Function Attrs: nounwind
 declare void @Server.serialize_response(ptr, ptr, i64, ptr, i1) #0
 
+; Function Attrs: nounwind
+declare void @Server.drain_completions(ptr, ptr) #0
+
 ; Function Attrs: nounwind
 declare void @Server.write_more(ptr, ptr, i64) #0
 

examples/expected/1329-ffi-objc-call-03-selector-sharing.ir

@@ -1359,6 +1359,12 @@ declare i32 @Loop.add_write(ptr, ptr, i32, i64) #0
 ; Function Attrs: nounwind
 declare void @Loop.del_write(ptr, ptr, i32) #0
 
+; Function Attrs: nounwind
+declare i32 @Loop.add_wake(ptr, ptr, i64) #0
+
+; Function Attrs: nounwind
+declare void @Loop.wake(ptr, ptr) #0
+
 ; Function Attrs: nounwind
 declare [2 x i64] @Loop.wait(ptr, ptr, ptr, i64) #0
 
@@ -1381,7 +1387,13 @@ declare i1 @ascii_ieq(ptr, ptr, ptr) #0
 declare ptr @reason_for(ptr, i64) #0
 
 ; Function Attrs: nounwind
-declare void @Server.init(ptr sret({ { { i64, i32, i64, i64, i64, i64, i64 }, { i32 }, i32, ptr, { ptr, ptr, ptr }, ptr, i64 }, i32 }), ptr, ptr, ptr, i64) #0
+declare void @run_handler_job(ptr, i64) #0
+
+; Function Attrs: nounwind
+declare [2 x i64] @serialize_bytes(ptr, ptr, i1, ptr) #0
+
+; Function Attrs: nounwind
+declare void @Server.init(ptr sret({ { { i64, i32, i64, i64, i64, i64, i64, i64, i64 }, { i32 }, i32, ptr, { ptr, ptr, ptr }, ptr, i64, ptr }, i32 }), ptr, ptr, ptr, i64) #0
 
 ; Function Attrs: nounwind
 declare void @Server.close(ptr, ptr) #0
@@ -1416,6 +1428,9 @@ declare i1 @Server.try_serve_one(ptr, ptr, i64) #0
 ; Function Attrs: nounwind
 declare void @Server.serialize_response(ptr, ptr, i64, ptr, i1) #0
 
+; Function Attrs: nounwind
+declare void @Server.drain_completions(ptr, ptr) #0
+
 ; Function Attrs: nounwind
 declare void @Server.write_more(ptr, ptr, i64) #0
 

examples/expected/1347-ffi-objc-dsl-07-mangling-table.ir

@@ -1385,6 +1385,12 @@ declare i32 @Loop.add_write(ptr, ptr, i32, i64) #0
 ; Function Attrs: nounwind
 declare void @Loop.del_write(ptr, ptr, i32) #0
 
+; Function Attrs: nounwind
+declare i32 @Loop.add_wake(ptr, ptr, i64) #0
+
+; Function Attrs: nounwind
+declare void @Loop.wake(ptr, ptr) #0
+
 ; Function Attrs: nounwind
 declare [2 x i64] @Loop.wait(ptr, ptr, ptr, i64) #0
 
@@ -1407,7 +1413,13 @@ declare i1 @ascii_ieq(ptr, ptr, ptr) #0
 declare ptr @reason_for(ptr, i64) #0
 
 ; Function Attrs: nounwind
-declare void @Server.init(ptr sret({ { { i64, i32, i64, i64, i64, i64, i64 }, { i32 }, i32, ptr, { ptr, ptr, ptr }, ptr, i64 }, i32 }), ptr, ptr, ptr, i64) #0
+declare void @run_handler_job(ptr, i64) #0
+
+; Function Attrs: nounwind
+declare [2 x i64] @serialize_bytes(ptr, ptr, i1, ptr) #0
+
+; Function Attrs: nounwind
+declare void @Server.init(ptr sret({ { { i64, i32, i64, i64, i64, i64, i64, i64, i64 }, { i32 }, i32, ptr, { ptr, ptr, ptr }, ptr, i64, ptr }, i32 }), ptr, ptr, ptr, i64) #0
 
 ; Function Attrs: nounwind
 declare void @Server.close(ptr, ptr) #0
@@ -1442,6 +1454,9 @@ declare i1 @Server.try_serve_one(ptr, ptr, i64) #0
 ; Function Attrs: nounwind
 declare void @Server.serialize_response(ptr, ptr, i64, ptr, i1) #0
 
+; Function Attrs: nounwind
+declare void @Server.drain_completions(ptr, ptr) #0
+
 ; Function Attrs: nounwind
 declare void @Server.write_more(ptr, ptr, i64) #0
 

examples/expected/1402-ffi-jni-call-03-methodid-sharing.ir

@@ -1361,6 +1361,12 @@ declare i32 @Loop.add_write(ptr, ptr, i32, i64) #0
 ; Function Attrs: nounwind
 declare void @Loop.del_write(ptr, ptr, i32) #0
 
+; Function Attrs: nounwind
+declare i32 @Loop.add_wake(ptr, ptr, i64) #0
+
+; Function Attrs: nounwind
+declare void @Loop.wake(ptr, ptr) #0
+
 ; Function Attrs: nounwind
 declare [2 x i64] @Loop.wait(ptr, ptr, ptr, i64) #0
 
@@ -1383,7 +1389,13 @@ declare i1 @ascii_ieq(ptr, ptr, ptr) #0
 declare ptr @reason_for(ptr, i64) #0
 
 ; Function Attrs: nounwind
-declare void @Server.init(ptr sret({ { { i64, i32, i64, i64, i64, i64, i64 }, { i32 }, i32, ptr, { ptr, ptr, ptr }, ptr, i64 }, i32 }), ptr, ptr, ptr, i64) #0
+declare void @run_handler_job(ptr, i64) #0
+
+; Function Attrs: nounwind
+declare [2 x i64] @serialize_bytes(ptr, ptr, i1, ptr) #0
+
+; Function Attrs: nounwind
+declare void @Server.init(ptr sret({ { { i64, i32, i64, i64, i64, i64, i64, i64, i64 }, { i32 }, i32, ptr, { ptr, ptr, ptr }, ptr, i64, ptr }, i32 }), ptr, ptr, ptr, i64) #0
 
 ; Function Attrs: nounwind
 declare void @Server.close(ptr, ptr) #0
@@ -1418,6 +1430,9 @@ declare i1 @Server.try_serve_one(ptr, ptr, i64) #0
 ; Function Attrs: nounwind
 declare void @Server.serialize_response(ptr, ptr, i64, ptr, i1) #0
 
+; Function Attrs: nounwind
+declare void @Server.drain_completions(ptr, ptr) #0
+
 ; Function Attrs: nounwind
 declare void @Server.write_more(ptr, ptr, i64) #0
 

examples/expected/1403-ffi-jni-call-04-jint-return.ir

@@ -1359,6 +1359,12 @@ declare i32 @Loop.add_write(ptr, ptr, i32, i64) #0
 ; Function Attrs: nounwind
 declare void @Loop.del_write(ptr, ptr, i32) #0
 
+; Function Attrs: nounwind
+declare i32 @Loop.add_wake(ptr, ptr, i64) #0
+
+; Function Attrs: nounwind
+declare void @Loop.wake(ptr, ptr) #0
+
 ; Function Attrs: nounwind
 declare [2 x i64] @Loop.wait(ptr, ptr, ptr, i64) #0
 
@@ -1381,7 +1387,13 @@ declare i1 @ascii_ieq(ptr, ptr, ptr) #0
 declare ptr @reason_for(ptr, i64) #0
 
 ; Function Attrs: nounwind
-declare void @Server.init(ptr sret({ { { i64, i32, i64, i64, i64, i64, i64 }, { i32 }, i32, ptr, { ptr, ptr, ptr }, ptr, i64 }, i32 }), ptr, ptr, ptr, i64) #0
+declare void @run_handler_job(ptr, i64) #0
+
+; Function Attrs: nounwind
+declare [2 x i64] @serialize_bytes(ptr, ptr, i1, ptr) #0
+
+; Function Attrs: nounwind
+declare void @Server.init(ptr sret({ { { i64, i32, i64, i64, i64, i64, i64, i64, i64 }, { i32 }, i32, ptr, { ptr, ptr, ptr }, ptr, i64, ptr }, i32 }), ptr, ptr, ptr, i64) #0
 
 ; Function Attrs: nounwind
 declare void @Server.close(ptr, ptr) #0
@@ -1416,6 +1428,9 @@ declare i1 @Server.try_serve_one(ptr, ptr, i64) #0
 ; Function Attrs: nounwind
 declare void @Server.serialize_response(ptr, ptr, i64, ptr, i1) #0
 
+; Function Attrs: nounwind
+declare void @Server.drain_completions(ptr, ptr) #0
+
 ; Function Attrs: nounwind
 declare void @Server.write_more(ptr, ptr, i64) #0
 

examples/expected/1404-ffi-jni-call-05-jlong-return.ir

@@ -1359,6 +1359,12 @@ declare i32 @Loop.add_write(ptr, ptr, i32, i64) #0
 ; Function Attrs: nounwind
 declare void @Loop.del_write(ptr, ptr, i32) #0
 
+; Function Attrs: nounwind
+declare i32 @Loop.add_wake(ptr, ptr, i64) #0
+
+; Function Attrs: nounwind
+declare void @Loop.wake(ptr, ptr) #0
+
 ; Function Attrs: nounwind
 declare [2 x i64] @Loop.wait(ptr, ptr, ptr, i64) #0
 
@@ -1381,7 +1387,13 @@ declare i1 @ascii_ieq(ptr, ptr, ptr) #0
 declare ptr @reason_for(ptr, i64) #0
 
 ; Function Attrs: nounwind
-declare void @Server.init(ptr sret({ { { i64, i32, i64, i64, i64, i64, i64 }, { i32 }, i32, ptr, { ptr, ptr, ptr }, ptr, i64 }, i32 }), ptr, ptr, ptr, i64) #0
+declare void @run_handler_job(ptr, i64) #0
+
+; Function Attrs: nounwind
+declare [2 x i64] @serialize_bytes(ptr, ptr, i1, ptr) #0
+
+; Function Attrs: nounwind
+declare void @Server.init(ptr sret({ { { i64, i32, i64, i64, i64, i64, i64, i64, i64 }, { i32 }, i32, ptr, { ptr, ptr, ptr }, ptr, i64, ptr }, i32 }), ptr, ptr, ptr, i64) #0
 
 ; Function Attrs: nounwind
 declare void @Server.close(ptr, ptr) #0
@@ -1416,6 +1428,9 @@ declare i1 @Server.try_serve_one(ptr, ptr, i64) #0
 ; Function Attrs: nounwind
 declare void @Server.serialize_response(ptr, ptr, i64, ptr, i1) #0
 
+; Function Attrs: nounwind
+declare void @Server.drain_completions(ptr, ptr) #0
+
 ; Function Attrs: nounwind
 declare void @Server.write_more(ptr, ptr, i64) #0
 

examples/expected/1405-ffi-jni-call-06-jdouble-return.ir

@@ -1359,6 +1359,12 @@ declare i32 @Loop.add_write(ptr, ptr, i32, i64) #0
 ; Function Attrs: nounwind
 declare void @Loop.del_write(ptr, ptr, i32) #0
 
+; Function Attrs: nounwind
+declare i32 @Loop.add_wake(ptr, ptr, i64) #0
+
+; Function Attrs: nounwind
+declare void @Loop.wake(ptr, ptr) #0
+
 ; Function Attrs: nounwind
 declare [2 x i64] @Loop.wait(ptr, ptr, ptr, i64) #0
 
@@ -1381,7 +1387,13 @@ declare i1 @ascii_ieq(ptr, ptr, ptr) #0
 declare ptr @reason_for(ptr, i64) #0
 
 ; Function Attrs: nounwind
-declare void @Server.init(ptr sret({ { { i64, i32, i64, i64, i64, i64, i64 }, { i32 }, i32, ptr, { ptr, ptr, ptr }, ptr, i64 }, i32 }), ptr, ptr, ptr, i64) #0
+declare void @run_handler_job(ptr, i64) #0
+
+; Function Attrs: nounwind
+declare [2 x i64] @serialize_bytes(ptr, ptr, i1, ptr) #0
+
+; Function Attrs: nounwind
+declare void @Server.init(ptr sret({ { { i64, i32, i64, i64, i64, i64, i64, i64, i64 }, { i32 }, i32, ptr, { ptr, ptr, ptr }, ptr, i64, ptr }, i32 }), ptr, ptr, ptr, i64) #0
 
 ; Function Attrs: nounwind
 declare void @Server.close(ptr, ptr) #0
@@ -1416,6 +1428,9 @@ declare i1 @Server.try_serve_one(ptr, ptr, i64) #0
 ; Function Attrs: nounwind
 declare void @Server.serialize_response(ptr, ptr, i64, ptr, i1) #0
 
+; Function Attrs: nounwind
+declare void @Server.drain_completions(ptr, ptr) #0
+
 ; Function Attrs: nounwind
 declare void @Server.write_more(ptr, ptr, i64) #0
 

examples/expected/1406-ffi-jni-call-07-jboolean-return.ir

@@ -1359,6 +1359,12 @@ declare i32 @Loop.add_write(ptr, ptr, i32, i64) #0
 ; Function Attrs: nounwind
 declare void @Loop.del_write(ptr, ptr, i32) #0
 
+; Function Attrs: nounwind
+declare i32 @Loop.add_wake(ptr, ptr, i64) #0
+
+; Function Attrs: nounwind
+declare void @Loop.wake(ptr, ptr) #0
+
 ; Function Attrs: nounwind
 declare [2 x i64] @Loop.wait(ptr, ptr, ptr, i64) #0
 
@@ -1381,7 +1387,13 @@ declare i1 @ascii_ieq(ptr, ptr, ptr) #0
 declare ptr @reason_for(ptr, i64) #0
 
 ; Function Attrs: nounwind
-declare void @Server.init(ptr sret({ { { i64, i32, i64, i64, i64, i64, i64 }, { i32 }, i32, ptr, { ptr, ptr, ptr }, ptr, i64 }, i32 }), ptr, ptr, ptr, i64) #0
+declare void @run_handler_job(ptr, i64) #0
+
+; Function Attrs: nounwind
+declare [2 x i64] @serialize_bytes(ptr, ptr, i1, ptr) #0
+
+; Function Attrs: nounwind
+declare void @Server.init(ptr sret({ { { i64, i32, i64, i64, i64, i64, i64, i64, i64 }, { i32 }, i32, ptr, { ptr, ptr, ptr }, ptr, i64, ptr }, i32 }), ptr, ptr, ptr, i64) #0
 
 ; Function Attrs: nounwind
 declare void @Server.close(ptr, ptr) #0
@@ -1416,6 +1428,9 @@ declare i1 @Server.try_serve_one(ptr, ptr, i64) #0
 ; Function Attrs: nounwind
 declare void @Server.serialize_response(ptr, ptr, i64, ptr, i1) #0
 
+; Function Attrs: nounwind
+declare void @Server.drain_completions(ptr, ptr) #0
+
 ; Function Attrs: nounwind
 declare void @Server.write_more(ptr, ptr, i64) #0
 

examples/expected/1407-ffi-jni-call-08-jobject-return.ir

@@ -1359,6 +1359,12 @@ declare i32 @Loop.add_write(ptr, ptr, i32, i64) #0
 ; Function Attrs: nounwind
 declare void @Loop.del_write(ptr, ptr, i32) #0
 
+; Function Attrs: nounwind
+declare i32 @Loop.add_wake(ptr, ptr, i64) #0
+
+; Function Attrs: nounwind
+declare void @Loop.wake(ptr, ptr) #0
+
 ; Function Attrs: nounwind
 declare [2 x i64] @Loop.wait(ptr, ptr, ptr, i64) #0
 
@@ -1381,7 +1387,13 @@ declare i1 @ascii_ieq(ptr, ptr, ptr) #0
 declare ptr @reason_for(ptr, i64) #0
 
 ; Function Attrs: nounwind
-declare void @Server.init(ptr sret({ { { i64, i32, i64, i64, i64, i64, i64 }, { i32 }, i32, ptr, { ptr, ptr, ptr }, ptr, i64 }, i32 }), ptr, ptr, ptr, i64) #0
+declare void @run_handler_job(ptr, i64) #0
+
+; Function Attrs: nounwind
+declare [2 x i64] @serialize_bytes(ptr, ptr, i1, ptr) #0
+
+; Function Attrs: nounwind
+declare void @Server.init(ptr sret({ { { i64, i32, i64, i64, i64, i64, i64, i64, i64 }, { i32 }, i32, ptr, { ptr, ptr, ptr }, ptr, i64, ptr }, i32 }), ptr, ptr, ptr, i64) #0
 
 ; Function Attrs: nounwind
 declare void @Server.close(ptr, ptr) #0
@@ -1416,6 +1428,9 @@ declare i1 @Server.try_serve_one(ptr, ptr, i64) #0
 ; Function Attrs: nounwind
 declare void @Server.serialize_response(ptr, ptr, i64, ptr, i1) #0
 
+; Function Attrs: nounwind
+declare void @Server.drain_completions(ptr, ptr) #0
+
 ; Function Attrs: nounwind
 declare void @Server.write_more(ptr, ptr, i64) #0
 

examples/expected/1408-ffi-jni-call-09-static.ir

@@ -1359,6 +1359,12 @@ declare i32 @Loop.add_write(ptr, ptr, i32, i64) #0
 ; Function Attrs: nounwind
 declare void @Loop.del_write(ptr, ptr, i32) #0
 
+; Function Attrs: nounwind
+declare i32 @Loop.add_wake(ptr, ptr, i64) #0
+
+; Function Attrs: nounwind
+declare void @Loop.wake(ptr, ptr) #0
+
 ; Function Attrs: nounwind
 declare [2 x i64] @Loop.wait(ptr, ptr, ptr, i64) #0
 
@@ -1381,7 +1387,13 @@ declare i1 @ascii_ieq(ptr, ptr, ptr) #0
 declare ptr @reason_for(ptr, i64) #0
 
 ; Function Attrs: nounwind
-declare void @Server.init(ptr sret({ { { i64, i32, i64, i64, i64, i64, i64 }, { i32 }, i32, ptr, { ptr, ptr, ptr }, ptr, i64 }, i32 }), ptr, ptr, ptr, i64) #0
+declare void @run_handler_job(ptr, i64) #0
+
+; Function Attrs: nounwind
+declare [2 x i64] @serialize_bytes(ptr, ptr, i1, ptr) #0
+
+; Function Attrs: nounwind
+declare void @Server.init(ptr sret({ { { i64, i32, i64, i64, i64, i64, i64, i64, i64 }, { i32 }, i32, ptr, { ptr, ptr, ptr }, ptr, i64, ptr }, i32 }), ptr, ptr, ptr, i64) #0
 
 ; Function Attrs: nounwind
 declare void @Server.close(ptr, ptr) #0
@@ -1416,6 +1428,9 @@ declare i1 @Server.try_serve_one(ptr, ptr, i64) #0
 ; Function Attrs: nounwind
 declare void @Server.serialize_response(ptr, ptr, i64, ptr, i1) #0
 
+; Function Attrs: nounwind
+declare void @Server.drain_completions(ptr, ptr) #0
+
 ; Function Attrs: nounwind
 declare void @Server.write_more(ptr, ptr, i64) #0
 

examples/expected/1418-ffi-jni-class-08-call.ir

@@ -1359,6 +1359,12 @@ declare i32 @Loop.add_write(ptr, ptr, i32, i64) #0
 ; Function Attrs: nounwind
 declare void @Loop.del_write(ptr, ptr, i32) #0
 
+; Function Attrs: nounwind
+declare i32 @Loop.add_wake(ptr, ptr, i64) #0
+
+; Function Attrs: nounwind
+declare void @Loop.wake(ptr, ptr) #0
+
 ; Function Attrs: nounwind
 declare [2 x i64] @Loop.wait(ptr, ptr, ptr, i64) #0
 
@@ -1381,7 +1387,13 @@ declare i1 @ascii_ieq(ptr, ptr, ptr) #0
 declare ptr @reason_for(ptr, i64) #0
 
 ; Function Attrs: nounwind
-declare void @Server.init(ptr sret({ { { i64, i32, i64, i64, i64, i64, i64 }, { i32 }, i32, ptr, { ptr, ptr, ptr }, ptr, i64 }, i32 }), ptr, ptr, ptr, i64) #0
+declare void @run_handler_job(ptr, i64) #0
+
+; Function Attrs: nounwind
+declare [2 x i64] @serialize_bytes(ptr, ptr, i1, ptr) #0
+
+; Function Attrs: nounwind
+declare void @Server.init(ptr sret({ { { i64, i32, i64, i64, i64, i64, i64, i64, i64 }, { i32 }, i32, ptr, { ptr, ptr, ptr }, ptr, i64, ptr }, i32 }), ptr, ptr, ptr, i64) #0
 
 ; Function Attrs: nounwind
 declare void @Server.close(ptr, ptr) #0
@@ -1416,6 +1428,9 @@ declare i1 @Server.try_serve_one(ptr, ptr, i64) #0
 ; Function Attrs: nounwind
 declare void @Server.serialize_response(ptr, ptr, i64, ptr, i1) #0
 
+; Function Attrs: nounwind
+declare void @Server.drain_completions(ptr, ptr) #0
+
 ; Function Attrs: nounwind
 declare void @Server.write_more(ptr, ptr, i64) #0
 

examples/expected/1421-ffi-jni-env-02-lexical-direct.ir

@@ -1359,6 +1359,12 @@ declare i32 @Loop.add_write(ptr, ptr, i32, i64) #0
 ; Function Attrs: nounwind
 declare void @Loop.del_write(ptr, ptr, i32) #0
 
+; Function Attrs: nounwind
+declare i32 @Loop.add_wake(ptr, ptr, i64) #0
+
+; Function Attrs: nounwind
+declare void @Loop.wake(ptr, ptr) #0
+
 ; Function Attrs: nounwind
 declare [2 x i64] @Loop.wait(ptr, ptr, ptr, i64) #0
 
@@ -1381,7 +1387,13 @@ declare i1 @ascii_ieq(ptr, ptr, ptr) #0
 declare ptr @reason_for(ptr, i64) #0
 
 ; Function Attrs: nounwind
-declare void @Server.init(ptr sret({ { { i64, i32, i64, i64, i64, i64, i64 }, { i32 }, i32, ptr, { ptr, ptr, ptr }, ptr, i64 }, i32 }), ptr, ptr, ptr, i64) #0
+declare void @run_handler_job(ptr, i64) #0
+
+; Function Attrs: nounwind
+declare [2 x i64] @serialize_bytes(ptr, ptr, i1, ptr) #0
+
+; Function Attrs: nounwind
+declare void @Server.init(ptr sret({ { { i64, i32, i64, i64, i64, i64, i64, i64, i64 }, { i32 }, i32, ptr, { ptr, ptr, ptr }, ptr, i64, ptr }, i32 }), ptr, ptr, ptr, i64) #0
 
 ; Function Attrs: nounwind
 declare void @Server.close(ptr, ptr) #0
@@ -1416,6 +1428,9 @@ declare i1 @Server.try_serve_one(ptr, ptr, i64) #0
 ; Function Attrs: nounwind
 declare void @Server.serialize_response(ptr, ptr, i64, ptr, i1) #0
 
+; Function Attrs: nounwind
+declare void @Server.drain_completions(ptr, ptr) #0
+
 ; Function Attrs: nounwind
 declare void @Server.write_more(ptr, ptr, i64) #0
 

examples/expected/1425-ffi-jni-main-03-ctor.ir

@@ -882,6 +882,12 @@ declare i32 @Loop.add_write(ptr, ptr, i32, i64) #0
 ; Function Attrs: nounwind
 declare void @Loop.del_write(ptr, ptr, i32) #0
 
+; Function Attrs: nounwind
+declare i32 @Loop.add_wake(ptr, ptr, i64) #0
+
+; Function Attrs: nounwind
+declare void @Loop.wake(ptr, ptr) #0
+
 ; Function Attrs: nounwind
 declare [2 x i64] @Loop.wait(ptr, ptr, ptr, i64) #0
 
@@ -904,7 +910,13 @@ declare i1 @ascii_ieq(ptr, ptr, ptr) #0
 declare ptr @reason_for(ptr, i64) #0
 
 ; Function Attrs: nounwind
-declare void @Server.init(ptr sret({ { { i64, i32, i64, i64, i64, i64, i64 }, { i32 }, i32, ptr, { ptr, ptr, ptr }, ptr, i64 }, i32 }), ptr, ptr, ptr, i64) #0
+declare void @run_handler_job(ptr, i64) #0
+
+; Function Attrs: nounwind
+declare [2 x i64] @serialize_bytes(ptr, ptr, i1, ptr) #0
+
+; Function Attrs: nounwind
+declare void @Server.init(ptr sret({ { { i64, i32, i64, i64, i64, i64, i64, i64, i64 }, { i32 }, i32, ptr, { ptr, ptr, ptr }, ptr, i64, ptr }, i32 }), ptr, ptr, ptr, i64) #0
 
 ; Function Attrs: nounwind
 declare void @Server.close(ptr, ptr) #0
@@ -939,6 +951,9 @@ declare i1 @Server.try_serve_one(ptr, ptr, i64) #0
 ; Function Attrs: nounwind
 declare void @Server.serialize_response(ptr, ptr, i64, ptr, i1) #0
 
+; Function Attrs: nounwind
+declare void @Server.drain_completions(ptr, ptr) #0
+
 ; Function Attrs: nounwind
 declare void @Server.write_more(ptr, ptr, i64) #0
 

examples/expected/1633-http-server.stdout

@@ -5,4 +5,5 @@ POST echo ok
 404 routing ok
 big body grows the buffer and echoes intact
 slow client evicted, healthy client served
+pooled dispatch: GET, echo, 404 across worker threads ok
 http server ok