mirror of
https://github.com/superseriousbusiness/gotosocial
synced 2024-11-27 06:40:32 +00:00
145 lines
3 KiB
Go
145 lines
3 KiB
Go
// Copyright 2021 The Libc Authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
//go:build !libc.membrk && !libc.memgrind && !(linux && (amd64 || arm64 || loong64))
|
|
|
|
package libc // import "modernc.org/libc"
|
|
|
|
import (
|
|
"modernc.org/libc/errno"
|
|
"modernc.org/libc/sys/types"
|
|
"modernc.org/memory"
|
|
)
|
|
|
|
const memgrind = false
|
|
|
|
var (
|
|
allocator memory.Allocator
|
|
)
|
|
|
|
// void *malloc(size_t size);
|
|
func Xmalloc(t *TLS, n types.Size_t) uintptr {
|
|
if __ccgo_strace {
|
|
trc("t=%v n=%v, (%v:)", t, n, origin(2))
|
|
}
|
|
if n == 0 {
|
|
return 0
|
|
}
|
|
|
|
allocMu.Lock()
|
|
|
|
defer allocMu.Unlock()
|
|
|
|
p, err := allocator.UintptrMalloc(int(n))
|
|
if err != nil {
|
|
t.setErrno(errno.ENOMEM)
|
|
return 0
|
|
}
|
|
|
|
return p
|
|
}
|
|
|
|
// void *calloc(size_t nmemb, size_t size);
|
|
func Xcalloc(t *TLS, n, size types.Size_t) uintptr {
|
|
if __ccgo_strace {
|
|
trc("t=%v size=%v, (%v:)", t, size, origin(2))
|
|
}
|
|
rq := int(n * size)
|
|
if rq == 0 {
|
|
return 0
|
|
}
|
|
|
|
allocMu.Lock()
|
|
|
|
defer allocMu.Unlock()
|
|
|
|
p, err := allocator.UintptrCalloc(int(n * size))
|
|
if err != nil {
|
|
t.setErrno(errno.ENOMEM)
|
|
return 0
|
|
}
|
|
|
|
return p
|
|
}
|
|
|
|
// void *realloc(void *ptr, size_t size);
|
|
func Xrealloc(t *TLS, ptr uintptr, size types.Size_t) uintptr {
|
|
if __ccgo_strace {
|
|
trc("t=%v ptr=%v size=%v, (%v:)", t, ptr, size, origin(2))
|
|
}
|
|
allocMu.Lock()
|
|
|
|
defer allocMu.Unlock()
|
|
|
|
p, err := allocator.UintptrRealloc(ptr, int(size))
|
|
if err != nil {
|
|
t.setErrno(errno.ENOMEM)
|
|
return 0
|
|
}
|
|
|
|
return p
|
|
}
|
|
|
|
// void free(void *ptr);
|
|
func Xfree(t *TLS, p uintptr) {
|
|
if __ccgo_strace {
|
|
trc("t=%v p=%v, (%v:)", t, p, origin(2))
|
|
}
|
|
if p == 0 {
|
|
return
|
|
}
|
|
|
|
allocMu.Lock()
|
|
|
|
defer allocMu.Unlock()
|
|
|
|
allocator.UintptrFree(p)
|
|
}
|
|
|
|
func Xmalloc_usable_size(tls *TLS, p uintptr) (r types.Size_t) {
|
|
if __ccgo_strace {
|
|
trc("tls=%v p=%v, (%v:)", tls, p, origin(2))
|
|
defer func() { trc("-> %v", r) }()
|
|
}
|
|
if p == 0 {
|
|
return 0
|
|
}
|
|
|
|
allocMu.Lock()
|
|
|
|
defer allocMu.Unlock()
|
|
|
|
return types.Size_t(memory.UintptrUsableSize(p))
|
|
}
|
|
|
|
func UsableSize(p uintptr) types.Size_t {
|
|
allocMu.Lock()
|
|
|
|
defer allocMu.Unlock()
|
|
|
|
return types.Size_t(memory.UintptrUsableSize(p))
|
|
}
|
|
|
|
// MemAuditStart locks the memory allocator, initializes and enables memory
|
|
// auditing. Finaly it unlocks the memory allocator.
|
|
//
|
|
// Some memory handling errors, like double free or freeing of unallocated
|
|
// memory, will panic when memory auditing is enabled.
|
|
//
|
|
// This memory auditing functionality has to be enabled using the libc.memgrind
|
|
// build tag.
|
|
//
|
|
// It is intended only for debug/test builds. It slows down memory allocation
|
|
// routines and it has additional memory costs.
|
|
func MemAuditStart() {}
|
|
|
|
// MemAuditReport locks the memory allocator, reports memory leaks, if any.
|
|
// Finally it disables memory auditing and unlocks the memory allocator.
|
|
//
|
|
// This memory auditing functionality has to be enabled using the libc.memgrind
|
|
// build tag.
|
|
//
|
|
// It is intended only for debug/test builds. It slows down memory allocation
|
|
// routines and it has additional memory costs.
|
|
func MemAuditReport() error { return nil }
|