Changeset b110bcc for libcfa/src/concurrency/kernel/cluster.cfa

Timestamp:

Apr 21, 2023, 5:36:12 PM (2 years ago)

Author:

JiadaL <j82liang@…>

Branches:

ADT, master

Children:

28f8f15, 6e4c44d

Parents:

2ed94a9 (diff), 699a97d (diff)
Note: this is a merge changeset, the changes displayed below correspond to the merge itself.
Use the (diff) links above to see all the changes relative to each parent.

Message:

Merge branch 'master' of plg.uwaterloo.ca:software/cfa/cfa-cc

File:

• libcfa/src/concurrency/kernel/cluster.cfa (modified) (5 diffs)

libcfa/src/concurrency/kernel/cluster.cfa

@@ -15 +15 @@
 
 #define __cforall_thread__
-#define _GNU_SOURCE
 
 #include "bits/defs.hfa"
@@ -69 +68 @@
         return max_cores_l;
 }
-
-#if   defined(CFA_HAVE_LINUX_LIBRSEQ)
-        // No forward declaration needed
-        #define __kernel_rseq_register rseq_register_current_thread
-        #define __kernel_rseq_unregister rseq_unregister_current_thread
-#elif defined(CFA_HAVE_LINUX_RSEQ_H)
-        static void __kernel_raw_rseq_register  (void);
-        static void __kernel_raw_rseq_unregister(void);
-
-        #define __kernel_rseq_register __kernel_raw_rseq_register
-        #define __kernel_rseq_unregister __kernel_raw_rseq_unregister
-#else
-        // No forward declaration needed
-        // No initialization needed
-        static inline void noop(void) {}
-
-        #define __kernel_rseq_register noop
-        #define __kernel_rseq_unregister noop
-#endif
 
 //=======================================================================
@@ -111 +91 @@
 // Lock-Free registering/unregistering of threads
 unsigned register_proc_id( void ) with(__scheduler_lock.lock) {
-        __kernel_rseq_register();
-
         bool * handle = (bool *)&kernelTLS().sched_lock;
 
@@ -162 +140 @@
 
         __atomic_store_n(cell, 0p, __ATOMIC_RELEASE);
-
-        __kernel_rseq_unregister();
 }
 
@@ -505 +481 @@
         /* paranoid */ verify( mock_head(this)    == this.l.prev );
 }
-
-#if   defined(CFA_HAVE_LINUX_LIBRSEQ)
-        // No definition needed
-#elif defined(CFA_HAVE_LINUX_RSEQ_H)
-
-        #if defined( __x86_64 ) || defined( __i386 )
-                #define RSEQ_SIG        0x53053053
-        #elif defined( __ARM_ARCH )
-                #ifdef __ARMEB__
-                #define RSEQ_SIG    0xf3def5e7      /* udf    #24035    ; 0x5de3 (ARMv6+) */
-                #else
-                #define RSEQ_SIG    0xe7f5def3      /* udf    #24035    ; 0x5de3 */
-                #endif
-        #endif
-
-        extern void __disable_interrupts_hard();
-        extern void __enable_interrupts_hard();
-
-        static void __kernel_raw_rseq_register  (void) {
-                /* paranoid */ verify( __cfaabi_rseq.cpu_id == RSEQ_CPU_ID_UNINITIALIZED );
-
-                // int ret = syscall(__NR_rseq, &__cfaabi_rseq, sizeof(struct rseq), 0, (sigset_t *)0p, _NSIG / 8);
-                int ret = syscall(__NR_rseq, &__cfaabi_rseq, sizeof(struct rseq), 0, RSEQ_SIG);
-                if(ret != 0) {
-                        int e = errno;
-                        switch(e) {
-                        case EINVAL: abort("KERNEL ERROR: rseq register invalid argument");
-                        case ENOSYS: abort("KERNEL ERROR: rseq register no supported");
-                        case EFAULT: abort("KERNEL ERROR: rseq register with invalid argument");
-                        case EBUSY : abort("KERNEL ERROR: rseq register already registered");
-                        case EPERM : abort("KERNEL ERROR: rseq register sig  argument  on unregistration does not match the signature received on registration");
-                        default: abort("KERNEL ERROR: rseq register unexpected return %d", e);
-                        }
-                }
-        }
-
-        static void __kernel_raw_rseq_unregister(void) {
-                /* paranoid */ verify( __cfaabi_rseq.cpu_id >= 0 );
-
-                // int ret = syscall(__NR_rseq, &__cfaabi_rseq, sizeof(struct rseq), RSEQ_FLAG_UNREGISTER, (sigset_t *)0p, _NSIG / 8);
-                int ret = syscall(__NR_rseq, &__cfaabi_rseq, sizeof(struct rseq), RSEQ_FLAG_UNREGISTER, RSEQ_SIG);
-                if(ret != 0) {
-                        int e = errno;
-                        switch(e) {
-                        case EINVAL: abort("KERNEL ERROR: rseq unregister invalid argument");
-                        case ENOSYS: abort("KERNEL ERROR: rseq unregister no supported");
-                        case EFAULT: abort("KERNEL ERROR: rseq unregister with invalid argument");
-                        case EBUSY : abort("KERNEL ERROR: rseq unregister already registered");
-                        case EPERM : abort("KERNEL ERROR: rseq unregister sig  argument  on unregistration does not match the signature received on registration");
-                        default: abort("KERNEL ERROR: rseq unregisteunexpected return %d", e);
-                        }
-                }
-        }
-#else
-        // No definition needed
-#endif