Changeset fe9468e2 for libcfa

Timestamp:

Dec 3, 2020, 3:18:55 PM (3 years ago)

Author:

Thierry Delisle <tdelisle@…>

Branches:

ADT, arm-eh, ast-experimental, enum, forall-pointer-decay, jacob/cs343-translation, master, new-ast-unique-expr, pthread-emulation, qualifiedEnum

Children:

0f88a225

Parents:

6011658

Message:

Added function thread_rand as a tls-safe version of tls_rand()

Location:

libcfa/src/concurrency

Files:

• io.cfa (modified) (3 diffs)
• io/call.cfa.in (modified) (1 diff)
• kernel/fwd.hfa (modified) (1 diff)
• thread.cfa (modified) (1 diff)

libcfa/src/concurrency/io.cfa

@@ -160 +160 @@
         static inline void process(struct io_uring_cqe & cqe ) {
                 struct io_future_t * future = (struct io_future_t *)(uintptr_t)cqe.user_data;
-                __cfadbg_print_safe( io, "Kernel I/O : Syscall completed : cqe %p, result %d for %p\n", future, cqe.res, data->thrd );
+                __cfadbg_print_safe( io, "Kernel I/O : Syscall completed : cqe %p, result %d for %p\n", &cqe, cqe.res, future );
 
                 fulfil( *future, cqe.res );
@@ -298 +298 @@
                 __u32 mask = *ring.submit_q.mask;
 
-                disable_interrupts();
-                        __u32 off = __tls_rand();
-                enable_interrupts( __cfaabi_dbg_ctx );
+                __u32 off = thread_rand();
 
                 // Loop around looking for an available spot
@@ -344 +342 @@
                 __u32 ready_mask = ring.submit_q.ready_cnt - 1;
 
-                disable_interrupts();
-                        __u32 off = __tls_rand();
-                enable_interrupts( __cfaabi_dbg_ctx );
+                __u32 off = thread_rand();
 
                 __u32 picked;

libcfa/src/concurrency/io/call.cfa.in

@@ -84 +84 @@
 
                 /* paranoid */ verifyf( cltr->io.ctxs, "default io contexts for cluster %p are missing\\n", cltr);
-                return &cltr->io.ctxs[ __tls_rand() % cltr->io.cnt ];
+                return &cltr->io.ctxs[ thread_rand() % cltr->io.cnt ];
         }
 #endif

libcfa/src/concurrency/kernel/fwd.hfa

@@ -132 +132 @@
                 }
 
+                extern uint64_t thread_rand();
+
                 //-----------------------------------------------------------------------
                 // Statics call at the end of each thread to register statistics

libcfa/src/concurrency/thread.cfa

@@ -162 +162 @@
 }
 
+uint64_t thread_rand() {
+        disable_interrupts();
+        uint64_t ret = __tls_rand();
+        enable_interrupts( __cfaabi_dbg_ctx );
+        return ret;
+}
+
 // Local Variables: //
 // mode: c //