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-rw-r--r--sysdeps/unix/sysv/linux/i386/lll_timedwait_tid.c1
-rw-r--r--sysdeps/unix/sysv/linux/i386/lowlevellock.S66
-rw-r--r--sysdeps/unix/sysv/linux/i386/lowlevellock.h25
-rw-r--r--sysdeps/unix/sysv/linux/lowlevellock-futex.h7
-rw-r--r--sysdeps/unix/sysv/linux/sparc/lowlevellock.h25
-rw-r--r--sysdeps/unix/sysv/linux/x86_64/lll_timedwait_tid.c1
-rw-r--r--sysdeps/unix/sysv/linux/x86_64/lowlevellock.S83
-rw-r--r--sysdeps/unix/sysv/linux/x86_64/lowlevellock.h25
8 files changed, 7 insertions, 226 deletions
diff --git a/sysdeps/unix/sysv/linux/i386/lll_timedwait_tid.c b/sysdeps/unix/sysv/linux/i386/lll_timedwait_tid.c
deleted file mode 100644
index 43900c6294..0000000000
--- a/sysdeps/unix/sysv/linux/i386/lll_timedwait_tid.c
+++ /dev/null
@@ -1 +0,0 @@
-/* __lll_timedwait_tid is in lowlevellock.S. */
diff --git a/sysdeps/unix/sysv/linux/i386/lowlevellock.S b/sysdeps/unix/sysv/linux/i386/lowlevellock.S
index b5f5b5b11c..83191a3899 100644
--- a/sysdeps/unix/sysv/linux/i386/lowlevellock.S
+++ b/sysdeps/unix/sysv/linux/i386/lowlevellock.S
@@ -365,70 +365,4 @@ __lll_unlock_wake:
ret
cfi_endproc
.size __lll_unlock_wake,.-__lll_unlock_wake
-
- .globl __lll_timedwait_tid
- .type __lll_timedwait_tid,@function
- .hidden __lll_timedwait_tid
- .align 16
-__lll_timedwait_tid:
- pushl %edi
- pushl %esi
- pushl %ebx
- pushl %ebp
-
- movl %eax, %ebp
- movl %edx, %edi
- subl $8, %esp
-
- /* Get current time. */
-2: movl %esp, %ebx
- xorl %ecx, %ecx
- movl $__NR_gettimeofday, %eax
- ENTER_KERNEL
-
- /* Compute relative timeout. */
- movl 4(%esp), %eax
- movl $1000, %edx
- mul %edx /* Milli seconds to nano seconds. */
- movl (%edi), %ecx
- movl 4(%edi), %edx
- subl (%esp), %ecx
- subl %eax, %edx
- jns 5f
- addl $1000000000, %edx
- subl $1, %ecx
-5: testl %ecx, %ecx
- js 6f /* Time is already up. */
-
- movl %ecx, (%esp) /* Store relative timeout. */
- movl %edx, 4(%esp)
-
- movl (%ebp), %edx
- testl %edx, %edx
- jz 4f
-
- movl %esp, %esi
- /* XXX The kernel so far uses global futex for the wakeup at
- all times. */
- xorl %ecx, %ecx /* movl $FUTEX_WAIT, %ecx */
- movl %ebp, %ebx
- movl $SYS_futex, %eax
- ENTER_KERNEL
-
- cmpl $0, (%ebx)
- jne 1f
-4: xorl %eax, %eax
-
-3: addl $8, %esp
- popl %ebp
- popl %ebx
- popl %esi
- popl %edi
- ret
-
-1: cmpl $-ETIMEDOUT, %eax
- jne 2b
-6: movl $ETIMEDOUT, %eax
- jmp 3b
- .size __lll_timedwait_tid,.-__lll_timedwait_tid
#endif
diff --git a/sysdeps/unix/sysv/linux/i386/lowlevellock.h b/sysdeps/unix/sysv/linux/i386/lowlevellock.h
index aa8f4bfdf6..94dccc4ce7 100644
--- a/sysdeps/unix/sysv/linux/i386/lowlevellock.h
+++ b/sysdeps/unix/sysv/linux/i386/lowlevellock.h
@@ -219,31 +219,6 @@ extern int __lll_timedlock_elision (int *futex, short *adapt_count,
#define lll_islocked(futex) \
(futex != LLL_LOCK_INITIALIZER)
-extern int __lll_timedwait_tid (int *tid, const struct timespec *abstime)
- __attribute__ ((regparm (2))) attribute_hidden;
-
-/* The kernel notifies a process which uses CLONE_CHILD_CLEARTID via futex
- wake-up when the clone terminates. The memory location contains the
- thread ID while the clone is running and is reset to zero by the kernel
- afterwards. The kernel up to version 3.16.3 does not use the private futex
- operations for futex wake-up when the clone terminates.
- If ABSTIME is not NULL, is used a timeout for futex call. If the timeout
- occurs then return ETIMEOUT, if ABSTIME is invalid, return EINVAL.
- The futex operation are issues with cancellable versions. */
-#define lll_wait_tid(tid, abstime) \
- ({ \
- int __res = 0; \
- __typeof (tid) __tid; \
- if (abstime != NULL) \
- __res = __lll_timedwait_tid (&(tid), (abstime)); \
- else \
- /* We need acquire MO here so that we synchronize with the \
- kernel's store to 0 when the clone terminates. (see above) */ \
- while ((__tid = atomic_load_acquire (&(tid))) != 0) \
- lll_futex_wait_cancel (&(tid), __tid, LLL_SHARED); \
- __res; \
- })
-
extern int __lll_lock_elision (int *futex, short *adapt_count, int private)
attribute_hidden;
diff --git a/sysdeps/unix/sysv/linux/lowlevellock-futex.h b/sysdeps/unix/sysv/linux/lowlevellock-futex.h
index 8ca3417aaa..6f060b1739 100644
--- a/sysdeps/unix/sysv/linux/lowlevellock-futex.h
+++ b/sysdeps/unix/sysv/linux/lowlevellock-futex.h
@@ -135,6 +135,13 @@
__err; \
})
+#define lll_futex_timed_wait_cancel(futexp, val, timeout, private) \
+ ({ \
+ int __oldtype = CANCEL_ASYNC (); \
+ long int __err = lll_futex_timed_wait (futexp, val, timeout, private); \
+ CANCEL_RESET (__oldtype); \
+ __err; \
+ })
#endif /* !__ASSEMBLER__ */
diff --git a/sysdeps/unix/sysv/linux/sparc/lowlevellock.h b/sysdeps/unix/sysv/linux/sparc/lowlevellock.h
index 5aed572d43..c778f4259b 100644
--- a/sysdeps/unix/sysv/linux/sparc/lowlevellock.h
+++ b/sysdeps/unix/sysv/linux/sparc/lowlevellock.h
@@ -108,29 +108,4 @@ __lll_timedlock (int *futex, const struct timespec *abstime, int private)
#define LLL_LOCK_INITIALIZER (0)
#define LLL_LOCK_INITIALIZER_LOCKED (1)
-extern int __lll_timedwait_tid (int *, const struct timespec *)
- attribute_hidden;
-
-/* The kernel notifies a process which uses CLONE_CHILD_CLEARTID via futex
- wake-up when the clone terminates. The memory location contains the
- thread ID while the clone is running and is reset to zero by the kernel
- afterwards. The kernel up to version 3.16.3 does not use the private futex
- operations for futex wake-up when the clone terminates.
- If ABSTIME is not NULL, is used a timeout for futex call. If the timeout
- occurs then return ETIMEOUT, if ABSTIME is invalid, return EINVAL.
- The futex operation are issues with cancellable versions. */
-#define lll_wait_tid(tid, abstime) \
- ({ \
- int __res = 0; \
- __typeof (tid) __tid; \
- if (abstime != NULL) \
- __res = __lll_timedwait_tid (&(tid), (abstime)); \
- else \
- /* We need acquire MO here so that we synchronize with the \
- kernel's store to 0 when the clone terminates. (see above) */ \
- while ((__tid = atomic_load_acquire (&(tid))) != 0) \
- lll_futex_wait_cancel (&(tid), __tid, LLL_SHARED); \
- __res; \
- })
-
#endif /* lowlevellock.h */
diff --git a/sysdeps/unix/sysv/linux/x86_64/lll_timedwait_tid.c b/sysdeps/unix/sysv/linux/x86_64/lll_timedwait_tid.c
deleted file mode 100644
index 43900c6294..0000000000
--- a/sysdeps/unix/sysv/linux/x86_64/lll_timedwait_tid.c
+++ /dev/null
@@ -1 +0,0 @@
-/* __lll_timedwait_tid is in lowlevellock.S. */
diff --git a/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S b/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S
index f9abb4cb1f..166dbcfd3b 100644
--- a/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S
+++ b/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S
@@ -345,87 +345,4 @@ __lll_unlock_wake:
retq
cfi_endproc
.size __lll_unlock_wake,.-__lll_unlock_wake
-
- .globl __lll_timedwait_tid
- .type __lll_timedwait_tid,@function
- .hidden __lll_timedwait_tid
- .align 16
-__lll_timedwait_tid:
- cfi_startproc
- pushq %r12
- cfi_adjust_cfa_offset(8)
- pushq %r13
- cfi_adjust_cfa_offset(8)
- cfi_offset(%r12, -16)
- cfi_offset(%r13, -24)
-
- movq %rdi, %r12
- movq %rsi, %r13
-
- /* Align stack to 16 bytes when calling __gettimeofday. */
- subq $24, %rsp
- cfi_adjust_cfa_offset(24)
-
- /* Get current time. */
-2: movq %rsp, %rdi
- xorl %esi, %esi
- /* This call works because we directly jump to a system call entry
- which preserves all the registers. */
- call JUMPTARGET(__gettimeofday)
-
- /* Compute relative timeout. */
- movq 8(%rsp), %rax
- movl $1000, %edi
- mul %rdi /* Milli seconds to nano seconds. */
- movq (%r13), %rdi
- movq 8(%r13), %rsi
- subq (%rsp), %rdi
- subq %rax, %rsi
- jns 5f
- addq $1000000000, %rsi
- decq %rdi
-5: testq %rdi, %rdi
- js 6f /* Time is already up. */
-
- movq %rdi, (%rsp) /* Store relative timeout. */
- movq %rsi, 8(%rsp)
-
- movl (%r12), %edx
- testl %edx, %edx
- jz 4f
-
- movq %rsp, %r10
- /* XXX The kernel so far uses global futex for the wakeup at
- all times. */
-#if FUTEX_WAIT == 0
- xorl %esi, %esi
-#else
- movl $FUTEX_WAIT, %esi
-#endif
- movq %r12, %rdi
- movl $SYS_futex, %eax
- syscall
-
- cmpl $0, (%rdi)
- jne 1f
-4: xorl %eax, %eax
-
-8: addq $24, %rsp
- cfi_adjust_cfa_offset(-24)
- popq %r13
- cfi_adjust_cfa_offset(-8)
- cfi_restore(%r13)
- popq %r12
- cfi_adjust_cfa_offset(-8)
- cfi_restore(%r12)
- retq
-
- cfi_adjust_cfa_offset(32)
-1: cmpq $-ETIMEDOUT, %rax
- jne 2b
-
-6: movl $ETIMEDOUT, %eax
- jmp 8b
- cfi_endproc
- .size __lll_timedwait_tid,.-__lll_timedwait_tid
#endif
diff --git a/sysdeps/unix/sysv/linux/x86_64/lowlevellock.h b/sysdeps/unix/sysv/linux/x86_64/lowlevellock.h
index 47d4eabd61..8cbc1caa5b 100644
--- a/sysdeps/unix/sysv/linux/x86_64/lowlevellock.h
+++ b/sysdeps/unix/sysv/linux/x86_64/lowlevellock.h
@@ -222,31 +222,6 @@ extern int __lll_timedlock_elision (int *futex, short *adapt_count,
#define lll_islocked(futex) \
(futex != LLL_LOCK_INITIALIZER)
-extern int __lll_timedwait_tid (int *, const struct timespec *)
- attribute_hidden;
-
-/* The kernel notifies a process which uses CLONE_CHILD_CLEARTID via futex
- wake-up when the clone terminates. The memory location contains the
- thread ID while the clone is running and is reset to zero by the kernel
- afterwards. The kernel up to version 3.16.3 does not use the private futex
- operations for futex wake-up when the clone terminates.
- If ABSTIME is not NULL, is used a timeout for futex call. If the timeout
- occurs then return ETIMEOUT, if ABSTIME is invalid, return EINVAL.
- The futex operation are issues with cancellable versions. */
-#define lll_wait_tid(tid, abstime) \
- ({ \
- int __res = 0; \
- __typeof (tid) __tid; \
- if (abstime != NULL) \
- __res = __lll_timedwait_tid (&(tid), (abstime)); \
- else \
- /* We need acquire MO here so that we synchronize with the \
- kernel's store to 0 when the clone terminates. (see above) */ \
- while ((__tid = atomic_load_acquire (&(tid))) != 0) \
- lll_futex_wait_cancel (&(tid), __tid, LLL_SHARED); \
- __res; \
- })
-
extern int __lll_lock_elision (int *futex, short *adapt_count, int private)
attribute_hidden;
generated by cgit v1.2.3 (git 2.25.1) at 2024-10-25 12:31:59 +0000