runtime: trivial replacements of g in remaining files

Rename g variables to gp for consistency.

Change-Id: I09ecdc7e8439637bc0e32f9c5f96f515e6436362
Reviewed-on: https://go-review.googlesource.com/c/go/+/418591
Reviewed-by: Austin Clements <austin@google.com>
Run-TryBot: Michael Pratt <mpratt@google.com>

src/runtime/cgocheck.go

@@ -32,14 +32,14 @@ func cgoCheckWriteBarrier(dst *uintptr, src uintptr) {
 
 	// If we are running on the system stack then dst might be an
 	// address on the stack, which is OK.
-	g := getg()
+	gp := getg()
-	if g == g.m.g0 || g == g.m.gsignal {
+	if gp == gp.m.g0 || gp == gp.m.gsignal {
 		return
 	}
 
 	// Allocating memory can write to various mfixalloc structs
 	// that look like they are non-Go memory.
-	if g.m.mallocing != 0 {
+	if gp.m.mallocing != 0 {
 		return
 	}
 

src/runtime/debug.go

@@ -85,13 +85,13 @@ func debug_modinfo() string {
 //go:linkname mayMoreStackPreempt
 func mayMoreStackPreempt() {
 	// Don't do anything on the g0 or gsignal stack.
-	g := getg()
+	gp := getg()
-	if g == g.m.g0 || g == g.m.gsignal {
+	if gp == gp.m.g0 || gp == gp.m.gsignal {
 		return
 	}
 	// Force a preemption, unless the stack is already poisoned.
-	if g.stackguard0 < stackPoisonMin {
+	if gp.stackguard0 < stackPoisonMin {
-		g.stackguard0 = stackPreempt
+		gp.stackguard0 = stackPreempt
 	}
 }
 
@@ -104,12 +104,12 @@ func mayMoreStackPreempt() {
 //go:linkname mayMoreStackMove
 func mayMoreStackMove() {
 	// Don't do anything on the g0 or gsignal stack.
-	g := getg()
+	gp := getg()
-	if g == g.m.g0 || g == g.m.gsignal {
+	if gp == gp.m.g0 || gp == gp.m.gsignal {
 		return
 	}
 	// Force stack movement, unless the stack is already poisoned.
-	if g.stackguard0 < stackPoisonMin {
+	if gp.stackguard0 < stackPoisonMin {
-		g.stackguard0 = stackForceMove
+		gp.stackguard0 = stackForceMove
 	}
 }

src/runtime/export_debuglog_test.go

@@ -25,11 +25,11 @@ func (l *dlogger) S(x string) *dlogger   { return l.s(x) }
 func (l *dlogger) PC(x uintptr) *dlogger { return l.pc(x) }
 
 func DumpDebugLog() string {
-	g := getg()
+	gp := getg()
-	g.writebuf = make([]byte, 0, 1<<20)
+	gp.writebuf = make([]byte, 0, 1<<20)
 	printDebugLog()
-	buf := g.writebuf
+	buf := gp.writebuf
-	g.writebuf = nil
+	gp.writebuf = nil
 
 	return string(buf)
 }

src/runtime/export_test.go

@@ -460,17 +460,17 @@ func MapBucketsPointerIsNil(m map[int]int) bool {
 }
 
 func LockOSCounts() (external, internal uint32) {
-	g := getg()
+	gp := getg()
-	if g.m.lockedExt+g.m.lockedInt == 0 {
+	if gp.m.lockedExt+gp.m.lockedInt == 0 {
-		if g.lockedm != 0 {
+		if gp.lockedm != 0 {
 			panic("lockedm on non-locked goroutine")
 		}
 	} else {
-		if g.lockedm == 0 {
+		if gp.lockedm == 0 {
 			panic("nil lockedm on locked goroutine")
 		}
 	}
-	return g.m.lockedExt, g.m.lockedInt
+	return gp.m.lockedExt, gp.m.lockedInt
 }
 
 //go:noinline

src/runtime/malloc.go

@@ -1245,7 +1245,7 @@ func nextSample() uintptr {
 	}
 	if GOOS == "plan9" {
 		// Plan 9 doesn't support floating point in note handler.
-		if g := getg(); g == g.m.gsignal {
+		if gp := getg(); gp == gp.m.gsignal {
 			return nextSampleNoFP()
 		}
 	}

src/runtime/msan.go

@@ -31,8 +31,8 @@ const msanenabled = true
 //
 //go:nosplit
 func msanread(addr unsafe.Pointer, sz uintptr) {
-	g := getg()
+	gp := getg()
-	if g == nil || g.m == nil || g == g.m.g0 || g == g.m.gsignal {
+	if gp == nil || gp.m == nil || gp == gp.m.g0 || gp == gp.m.gsignal {
 		return
 	}
 	domsanread(addr, sz)

src/runtime/os_js.go

@@ -49,13 +49,13 @@ func osyield_no_g() {
 const _SIGSEGV = 0xb
 
 func sigpanic() {
-	g := getg()
+	gp := getg()
 	if !canpanic() {
 		throw("unexpected signal during runtime execution")
 	}
 
 	// js only invokes the exception handler for memory faults.
-	g.sig = _SIGSEGV
+	gp.sig = _SIGSEGV
 	panicmem()
 }
 

src/runtime/os_plan9.go

@@ -75,13 +75,13 @@ func os_sigpipe() {
 }
 
 func sigpanic() {
-	g := getg()
+	gp := getg()
 	if !canpanic() {
 		throw("unexpected signal during runtime execution")
 	}
 
-	note := gostringnocopy((*byte)(unsafe.Pointer(g.m.notesig)))
+	note := gostringnocopy((*byte)(unsafe.Pointer(gp.m.notesig)))
-	switch g.sig {
+	switch gp.sig {
 	case _SIGRFAULT, _SIGWFAULT:
 		i := indexNoFloat(note, "addr=")
 		if i >= 0 {
@@ -92,17 +92,17 @@ func sigpanic() {
 			panicmem()
 		}
 		addr := note[i:]
-		g.sigcode1 = uintptr(atolwhex(addr))
+		gp.sigcode1 = uintptr(atolwhex(addr))
-		if g.sigcode1 < 0x1000 {
+		if gp.sigcode1 < 0x1000 {
 			panicmem()
 		}
-		if g.paniconfault {
+		if gp.paniconfault {
-			panicmemAddr(g.sigcode1)
+			panicmemAddr(gp.sigcode1)
 		}
-		print("unexpected fault address ", hex(g.sigcode1), "\n")
+		print("unexpected fault address ", hex(gp.sigcode1), "\n")
 		throw("fault")
 	case _SIGTRAP:
-		if g.paniconfault {
+		if gp.paniconfault {
 			panicmem()
 		}
 		throw(note)

src/runtime/signal_windows.go

@@ -245,20 +245,20 @@ func winthrow(info *exceptionrecord, r *context, gp *g) {
 }
 
 func sigpanic() {
-	g := getg()
+	gp := getg()
 	if !canpanic() {
 		throw("unexpected signal during runtime execution")
 	}
 
-	switch g.sig {
+	switch gp.sig {
 	case _EXCEPTION_ACCESS_VIOLATION:
-		if g.sigcode1 < 0x1000 {
+		if gp.sigcode1 < 0x1000 {
 			panicmem()
 		}
-		if g.paniconfault {
+		if gp.paniconfault {
-			panicmemAddr(g.sigcode1)
+			panicmemAddr(gp.sigcode1)
 		}
-		print("unexpected fault address ", hex(g.sigcode1), "\n")
+		print("unexpected fault address ", hex(gp.sigcode1), "\n")
 		throw("fault")
 	case _EXCEPTION_INT_DIVIDE_BY_ZERO:
 		panicdivide()