runtime: remove unused getrlimit function

Follow CL 93655 which removed the (commented-out) usage of this
function.

Also remove unused constant _RLIMIT_AS and type rlimit.

Change-Id: Ifb6e6b2104f4c2555269f8ced72bfcae24f5d5e9
Reviewed-on: https://go-review.googlesource.com/94775
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Austin Clements <austin@google.com>

src/runtime/os2_freebsd.go

@@ -8,7 +8,6 @@ const (
 	_SS_DISABLE  = 4
 	_NSIG        = 33
 	_SI_USER     = 0x10001
-	_RLIMIT_AS   = 10
 	_SIG_BLOCK   = 1
 	_SIG_UNBLOCK = 2
 	_SIG_SETMASK = 3

src/runtime/os2_solaris.go

@@ -10,5 +10,4 @@ const (
 	_SIG_SETMASK = 3
 	_NSIG        = 73 /* number of signals in sigtable array */
 	_SI_USER     = 0
-	_RLIMIT_AS   = 10
 )

src/runtime/os3_solaris.go

@@ -16,7 +16,6 @@ import "unsafe"
 //go:cgo_import_dynamic libc_exit exit "libc.so"
 //go:cgo_import_dynamic libc_fstat fstat "libc.so"
 //go:cgo_import_dynamic libc_getcontext getcontext "libc.so"
-//go:cgo_import_dynamic libc_getrlimit getrlimit "libc.so"
 //go:cgo_import_dynamic libc_kill kill "libc.so"
 //go:cgo_import_dynamic libc_madvise madvise "libc.so"
 //go:cgo_import_dynamic libc_malloc malloc "libc.so"
@@ -51,7 +50,6 @@ import "unsafe"
 //go:linkname libc_exit libc_exit
 //go:linkname libc_fstat libc_fstat
 //go:linkname libc_getcontext libc_getcontext
-//go:linkname libc_getrlimit libc_getrlimit
 //go:linkname libc_kill libc_kill
 //go:linkname libc_madvise libc_madvise
 //go:linkname libc_malloc libc_malloc
@@ -87,7 +85,6 @@ var (
 	libc_exit,
 	libc_fstat,
 	libc_getcontext,
-	libc_getrlimit,
 	libc_kill,
 	libc_madvise,
 	libc_malloc,

src/runtime/os_dragonfly.go

@@ -10,7 +10,6 @@ const (
 	_NSIG        = 33
 	_SI_USER     = 0
 	_SS_DISABLE  = 4
-	_RLIMIT_AS   = 10
 	_SIG_BLOCK   = 1
 	_SIG_UNBLOCK = 2
 	_SIG_SETMASK = 3
@@ -36,9 +35,6 @@ func setitimer(mode int32, new, old *itimerval)
 //go:noescape
 func sysctl(mib *uint32, miblen uint32, out *byte, size *uintptr, dst *byte, ndst uintptr) int32
 
-//go:noescape
-func getrlimit(kind int32, limit unsafe.Pointer) int32
-
 func raise(sig uint32)
 func raiseproc(sig uint32)
 

src/runtime/os_freebsd.go

@@ -29,8 +29,6 @@ func setitimer(mode int32, new, old *itimerval)
 //go:noescape
 func sysctl(mib *uint32, miblen uint32, out *byte, size *uintptr, dst *byte, ndst uintptr) int32
 
-//go:noescape
-func getrlimit(kind int32, limit unsafe.Pointer) int32
 func raise(sig uint32)
 func raiseproc(sig uint32)
 

src/runtime/os_linux.go

@@ -350,8 +350,6 @@ func sigprocmask(how int32, new, old *sigset) {
 	rtsigprocmask(how, new, old, int32(unsafe.Sizeof(*new)))
 }
 
-//go:noescape
-func getrlimit(kind int32, limit unsafe.Pointer) int32
 func raise(sig uint32)
 func raiseproc(sig uint32)
 

src/runtime/os_linux_be64.go

@@ -15,16 +15,10 @@ const (
 	_SIG_BLOCK   = 0
 	_SIG_UNBLOCK = 1
 	_SIG_SETMASK = 2
-	_RLIMIT_AS   = 9
 )
 
 type sigset uint64
 
-type rlimit struct {
-	rlim_cur uintptr
-	rlim_max uintptr
-}
-
 var sigset_all = sigset(^uint64(0))
 
 //go:nosplit

src/runtime/os_linux_generic.go

@@ -19,7 +19,6 @@ const (
 	_SIG_BLOCK   = 0
 	_SIG_UNBLOCK = 1
 	_SIG_SETMASK = 2
-	_RLIMIT_AS   = 9
 )
 
 // It's hard to tease out exactly how big a Sigset is, but
@@ -27,11 +26,6 @@ const (
 // are running, this is right.
 type sigset [2]uint32
 
-type rlimit struct {
-	rlim_cur uintptr
-	rlim_max uintptr
-}
-
 var sigset_all = sigset{^uint32(0), ^uint32(0)}
 
 //go:nosplit

src/runtime/os_linux_mips64x.go

@@ -35,16 +35,10 @@ const (
 	_SIG_BLOCK   = 1
 	_SIG_UNBLOCK = 2
 	_SIG_SETMASK = 3
-	_RLIMIT_AS   = 6
 )
 
 type sigset [2]uint64
 
-type rlimit struct {
-	rlim_cur uintptr
-	rlim_max uintptr
-}
-
 var sigset_all = sigset{^uint64(0), ^uint64(0)}
 
 //go:nosplit

src/runtime/os_linux_mipsx.go

@@ -35,16 +35,10 @@ const (
 	_SIG_BLOCK   = 1
 	_SIG_UNBLOCK = 2
 	_SIG_SETMASK = 3
-	_RLIMIT_AS   = 6
 )
 
 type sigset [4]uint32
 
-type rlimit struct {
-	rlim_cur uintptr
-	rlim_max uintptr
-}
-
 var sigset_all = sigset{^uint32(0), ^uint32(0), ^uint32(0), ^uint32(0)}
 
 //go:nosplit

src/runtime/sys_dragonfly_amd64.s

@@ -119,14 +119,6 @@ TEXT runtime·write(SB),NOSPLIT,$-8
 	MOVL	AX, ret+24(FP)
 	RET
 
-TEXT runtime·getrlimit(SB),NOSPLIT,$-8
-	MOVL	kind+0(FP), DI
-	MOVQ	limit+8(FP), SI
-	MOVL	$194, AX
-	SYSCALL
-	MOVL	AX, ret+16(FP)
-	RET
-
 TEXT runtime·raise(SB),NOSPLIT,$16
 	MOVL	$496, AX	// lwp_gettid
 	SYSCALL

src/runtime/sys_freebsd_386.s

@@ -102,12 +102,6 @@ TEXT runtime·write(SB),NOSPLIT,$-4
 	MOVL	AX, ret+12(FP)
 	RET
 
-TEXT runtime·getrlimit(SB),NOSPLIT,$-4
-	MOVL	$194, AX
-	INT	$0x80
-	MOVL	AX, ret+8(FP)
-	RET
-
 TEXT runtime·raise(SB),NOSPLIT,$16
 	// thr_self(&8(SP))
 	LEAL	8(SP), AX

src/runtime/sys_freebsd_amd64.s

@@ -107,14 +107,6 @@ TEXT runtime·write(SB),NOSPLIT,$-8
 	MOVL	AX, ret+24(FP)
 	RET
 
-TEXT runtime·getrlimit(SB),NOSPLIT,$-8
-	MOVL	kind+0(FP), DI
-	MOVQ	limit+8(FP), SI
-	MOVL	$194, AX
-	SYSCALL
-	MOVL	AX, ret+16(FP)
-	RET
-
 TEXT runtime·raise(SB),NOSPLIT,$16
 	// thr_self(&8(SP))
 	LEAQ	8(SP), DI	// arg 1 &8(SP)

src/runtime/sys_freebsd_arm.s

@@ -25,7 +25,6 @@
 #define SYS_madvise (SYS_BASE + 75)
 #define SYS_setitimer (SYS_BASE + 83)
 #define SYS_fcntl (SYS_BASE + 92)
-#define SYS_getrlimit (SYS_BASE + 194)
 #define SYS___sysctl (SYS_BASE + 202)
 #define SYS_nanosleep (SYS_BASE + 240)
 #define SYS_clock_gettime (SYS_BASE + 232)
@@ -137,14 +136,6 @@ TEXT runtime·closefd(SB),NOSPLIT|NOFRAME,$0
 	MOVW	R0, ret+4(FP)
 	RET
 
-TEXT runtime·getrlimit(SB),NOSPLIT|NOFRAME,$0
-	MOVW kind+0(FP), R0
-	MOVW limit+4(FP), R1
-	MOVW $SYS_getrlimit, R7
-	SWI $0
-	MOVW	R0, ret+8(FP)
-	RET
-
 TEXT runtime·raise(SB),NOSPLIT,$8
 	// thr_self(&4(R13))
 	MOVW $4(R13), R0 // arg 1 &4(R13)

src/runtime/sys_linux_386.s

@@ -43,7 +43,6 @@
 #define SYS_rt_sigaction	174
 #define SYS_rt_sigprocmask	175
 #define SYS_sigaltstack 	186
-#define SYS_ugetrlimit		191
 #define SYS_mmap2		192
 #define SYS_mincore		218
 #define SYS_madvise		219
@@ -132,14 +131,6 @@ TEXT runtime·read(SB),NOSPLIT,$0
 	MOVL	AX, ret+12(FP)
 	RET
 
-TEXT runtime·getrlimit(SB),NOSPLIT,$0
-	MOVL	$SYS_ugetrlimit, AX
-	MOVL	kind+0(FP), BX
-	MOVL	limit+4(FP), CX
-	INVOKE_SYSCALL
-	MOVL	AX, ret+8(FP)
-	RET
-
 TEXT runtime·usleep(SB),NOSPLIT,$8
 	MOVL	$0, DX
 	MOVL	usec+0(FP), AX

src/runtime/sys_linux_amd64.s

@@ -33,7 +33,6 @@
 #define SYS_exit		60
 #define SYS_kill		62
 #define SYS_fcntl		72
-#define SYS_getrlimit		97
 #define SYS_sigaltstack 	131
 #define SYS_arch_prctl		158
 #define SYS_gettid		186
@@ -114,14 +113,6 @@ TEXT runtime·read(SB),NOSPLIT,$0-28
 	MOVL	AX, ret+24(FP)
 	RET
 
-TEXT runtime·getrlimit(SB),NOSPLIT,$0-20
-	MOVL	kind+0(FP), DI
-	MOVQ	limit+8(FP), SI
-	MOVL	$SYS_getrlimit, AX
-	SYSCALL
-	MOVL	AX, ret+16(FP)
-	RET
-
 TEXT runtime·usleep(SB),NOSPLIT,$16
 	MOVL	$0, DX
 	MOVL	usec+0(FP), AX

src/runtime/sys_linux_arm.s

@@ -37,7 +37,6 @@
 #define SYS_tkill (SYS_BASE + 238)
 #define SYS_sched_yield (SYS_BASE + 158)
 #define SYS_pselect6 (SYS_BASE + 335)
-#define SYS_ugetrlimit (SYS_BASE + 191)
 #define SYS_sched_getaffinity (SYS_BASE + 242)
 #define SYS_clock_gettime (SYS_BASE + 263)
 #define SYS_epoll_create (SYS_BASE + 250)
@@ -98,14 +97,6 @@ TEXT runtime·read(SB),NOSPLIT,$0
 	MOVW	R0, ret+12(FP)
 	RET
 
-TEXT runtime·getrlimit(SB),NOSPLIT,$0
-	MOVW	kind+0(FP), R0
-	MOVW	limit+4(FP), R1
-	MOVW	$SYS_ugetrlimit, R7
-	SWI	$0
-	MOVW	R0, ret+8(FP)
-	RET
-
 TEXT runtime·exit(SB),NOSPLIT|NOFRAME,$0
 	MOVW	code+0(FP), R0
 	MOVW	$SYS_exit_group, R7

src/runtime/sys_linux_arm64.s

@@ -29,7 +29,6 @@
 #define SYS_rt_sigaction	134
 #define SYS_rt_sigprocmask	135
 #define SYS_sigaltstack		132
-#define SYS_getrlimit		163
 #define SYS_madvise		233
 #define SYS_mincore		232
 #define SYS_getpid		172
@@ -116,14 +115,6 @@ done:
 	MOVW	R0, ret+24(FP)
 	RET
 
-TEXT runtime·getrlimit(SB),NOSPLIT|NOFRAME,$0-20
-	MOVW	kind+0(FP), R0
-	MOVD	limit+8(FP), R1
-	MOVD	$SYS_getrlimit, R8
-	SVC
-	MOVW	R0, ret+16(FP)
-	RET
-
 TEXT runtime·usleep(SB),NOSPLIT,$24-4
 	MOVWU	usec+0(FP), R3
 	MOVD	R3, R5

src/runtime/sys_linux_mips64x.s

@@ -33,7 +33,6 @@
 #define SYS_rt_sigaction	5013
 #define SYS_rt_sigprocmask	5014
 #define SYS_sigaltstack		5129
-#define SYS_getrlimit		5095
 #define SYS_madvise		5027
 #define SYS_mincore		5026
 #define SYS_gettid		5178
@@ -112,14 +111,6 @@ TEXT runtime·read(SB),NOSPLIT|NOFRAME,$0-28
 	MOVW	R2, ret+24(FP)
 	RET
 
-TEXT runtime·getrlimit(SB),NOSPLIT|NOFRAME,$0-20
-	MOVW	kind+0(FP), R4	// _RLIMIT_AS = 6 on linux/mips
-	MOVV	limit+8(FP), R5
-	MOVV	$SYS_getrlimit, R2
-	SYSCALL
-	MOVW	R2, ret+16(FP)
-	RET
-
 TEXT runtime·usleep(SB),NOSPLIT,$16-4
 	MOVWU	usec+0(FP), R3
 	MOVV	R3, R5

src/runtime/sys_linux_mipsx.s

@@ -32,7 +32,6 @@
 #define SYS_rt_sigaction	    4194
 #define SYS_rt_sigprocmask		4195
 #define SYS_sigaltstack		    4206
-#define SYS_getrlimit		    4076
 #define SYS_madvise		        4218
 #define SYS_mincore		        4217
 #define SYS_gettid		        4222
@@ -110,14 +109,6 @@ TEXT runtime·read(SB),NOSPLIT,$0-16
 	MOVW	R2, ret+12(FP)
 	RET
 
-TEXT runtime·getrlimit(SB),NOSPLIT,$0-12
-	MOVW	kind+0(FP), R4
-	MOVW	limit+4(FP), R5
-	MOVW	$SYS_getrlimit, R2
-	SYSCALL
-	MOVW	R2, ret+8(FP)
-	RET
-
 TEXT runtime·usleep(SB),NOSPLIT,$28-4
 	MOVW	usec+0(FP), R3
 	MOVW	R3, R5

src/runtime/sys_linux_ppc64x.s

@@ -35,7 +35,6 @@
 #define SYS_rt_sigaction	173
 #define SYS_rt_sigprocmask	174
 #define SYS_sigaltstack		185
-#define SYS_ugetrlimit		190
 #define SYS_madvise		205
 #define SYS_mincore		206
 #define SYS_gettid		207
@@ -103,13 +102,6 @@ TEXT runtime·read(SB),NOSPLIT|NOFRAME,$0-28
 	MOVW	R3, ret+24(FP)
 	RET
 
-TEXT runtime·getrlimit(SB),NOSPLIT|NOFRAME,$0-20
-	MOVW	kind+0(FP), R3
-	MOVD	limit+8(FP), R4
-	SYSCALL	$SYS_ugetrlimit
-	MOVW	R3, ret+16(FP)
-	RET
-
 TEXT runtime·usleep(SB),NOSPLIT,$16-4
 	MOVW	usec+0(FP), R3
 	MOVD	R3, R5

src/runtime/sys_linux_s390x.s

@@ -29,7 +29,6 @@
 #define SYS_rt_sigaction        174
 #define SYS_rt_sigprocmask      175
 #define SYS_sigaltstack         186
-#define SYS_ugetrlimit          191
 #define SYS_madvise             219
 #define SYS_mincore             218
 #define SYS_gettid              236
@@ -106,14 +105,6 @@ TEXT runtime·read(SB),NOSPLIT|NOFRAME,$0-28
 	MOVW	R2, ret+24(FP)
 	RET
 
-TEXT runtime·getrlimit(SB),NOSPLIT|NOFRAME,$0-20
-	MOVW	kind+0(FP), R2
-	MOVD	limit+8(FP), R3
-	MOVW	$SYS_ugetrlimit, R1
-	SYSCALL
-	MOVW	R2, ret+16(FP)
-	RET
-
 TEXT runtime·usleep(SB),NOSPLIT,$16-4
 	MOVW	usec+0(FP), R2
 	MOVD	R2, R4