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builtin: use dlmalloc for -freestanding (#13054)

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playX
2022-01-06 15:10:37 +03:00
committed by GitHub
parent fb66ec7cfb
commit ec91de3504
12 changed files with 284 additions and 108 deletions
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40
vlib/dlmalloc/dlmalloc_sys_nix.c.v
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@ -1,8 +1,9 @@
module dlmalloc
#include <sys/mman.h>
#include <unistd.h>
$if !freestanding {
#include <sys/mman.h>
#include <unistd.h>
}
fn C.munmap(ptr voidptr, size usize) int
fn C.mremap(ptr voidptr, old usize, new usize, flags usize) voidptr
fn C.mmap(base voidptr, len usize, prot int, flags int, fd int, offset i64) voidptr
@ -50,17 +51,22 @@ enum MapFlags {
}
fn system_alloc(_ voidptr, size usize) (voidptr, usize, u32) {
unsafe {
mem_prot := MemProt(int(MemProt.prot_read) | int(MemProt.prot_write))
map_flags := MapFlags(int(MapFlags.map_private) | int(MapFlags.map_anonymous))
addr := C.mmap(voidptr(0), size, int(mem_prot), int(map_flags), -1, 0)
$if !freestanding {
unsafe {
mem_prot := MemProt(int(MemProt.prot_read) | int(MemProt.prot_write))
map_flags := MapFlags(int(MapFlags.map_private) | int(MapFlags.map_anonymous))
addr := C.mmap(voidptr(0), size, int(mem_prot), int(map_flags), -1, 0)
if addr == voidptr(-1) {
return voidptr(0), 0, 0
} else {
return addr, size, 0
if addr == voidptr(-1) {
return voidptr(0), 0, 0
} else {
return addr, size, 0
}
}
} $else {
return voidptr(0), 0, 0
}
return voidptr(0), 0, 0
}
fn system_remap(_ voidptr, ptr voidptr, oldsize usize, newsize usize, can_move bool) voidptr {
@ -68,7 +74,7 @@ fn system_remap(_ voidptr, ptr voidptr, oldsize usize, newsize usize, can_move b
}
fn system_free_part(_ voidptr, ptr voidptr, oldsize usize, newsize usize) bool {
$if linux {
$if linux && !freestanding {
unsafe {
rc := C.mremap(ptr, oldsize, newsize, 0)
if rc != voidptr(-1) {
@ -76,7 +82,7 @@ fn system_free_part(_ voidptr, ptr voidptr, oldsize usize, newsize usize) bool {
}
return C.munmap(voidptr(usize(ptr) + newsize), oldsize - newsize) == 0
}
} $else $if macos {
} $else $if macos && !freestanding {
unsafe {
return C.munmap(voidptr(usize(ptr) + newsize), oldsize - newsize) == 0
}
@ -85,8 +91,12 @@ fn system_free_part(_ voidptr, ptr voidptr, oldsize usize, newsize usize) bool {
}
fn system_free(_ voidptr, ptr voidptr, size usize) bool {
unsafe {
return C.munmap(ptr, size) == 0
$if !freestanding {
unsafe {
return C.munmap(ptr, size) == 0
}
} $else {
return false
}
}