mirror of
https://github.com/nim-lang/Nim.git
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dedb04fa9e
* cycle collector: new implementation * cycle collector: make self-adaptive based on its previous effectiveness * cycle collector: added Lins's jump stack to improve traversal from 3*N to 2*N * cycle collector: make tests green * API extensions and bugfixes * code cleanup and use --gc:orc for tasyncawait
84 lines
2.3 KiB
Nim
84 lines
2.3 KiB
Nim
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proc allocImpl(size: Natural): pointer =
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c_malloc(size.csize_t)
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proc alloc0Impl(size: Natural): pointer =
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c_calloc(size.csize_t, 1)
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proc reallocImpl(p: pointer, newsize: Natural): pointer =
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c_realloc(p, newSize.csize_t)
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proc realloc0Impl(p: pointer, oldsize, newsize: Natural): pointer =
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result = realloc(p, newsize.csize_t)
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if newsize > oldsize:
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zeroMem(cast[pointer](cast[int](result) + oldsize), newsize - oldsize)
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proc deallocImpl(p: pointer) =
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c_free(p)
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# The shared allocators map on the regular ones
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proc allocSharedImpl(size: Natural): pointer =
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allocImpl(size)
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proc allocShared0Impl(size: Natural): pointer =
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alloc0Impl(size)
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proc reallocSharedImpl(p: pointer, newsize: Natural): pointer =
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reallocImpl(p, newsize)
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proc reallocShared0Impl(p: pointer, oldsize, newsize: Natural): pointer =
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realloc0Impl(p, oldsize, newsize)
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proc deallocSharedImpl(p: pointer) = deallocImpl(p)
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# Empty stubs for the GC
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proc GC_disable() = discard
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proc GC_enable() = discard
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when not defined(gcOrc):
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proc GC_fullCollect() = discard
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proc GC_enableMarkAndSweep() = discard
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proc GC_disableMarkAndSweep() = discard
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proc GC_setStrategy(strategy: GC_Strategy) = discard
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proc getOccupiedMem(): int = discard
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proc getFreeMem(): int = discard
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proc getTotalMem(): int = discard
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proc nimGC_setStackBottom(theStackBottom: pointer) = discard
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proc initGC() = discard
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proc newObjNoInit(typ: PNimType, size: int): pointer =
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result = alloc(size)
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proc growObj(old: pointer, newsize: int): pointer =
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result = realloc(old, newsize)
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proc nimGCref(p: pointer) {.compilerproc, inline.} = discard
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proc nimGCunref(p: pointer) {.compilerproc, inline.} = discard
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proc unsureAsgnRef(dest: PPointer, src: pointer) {.compilerproc, inline.} =
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dest[] = src
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proc asgnRef(dest: PPointer, src: pointer) {.compilerproc, inline.} =
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dest[] = src
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proc asgnRefNoCycle(dest: PPointer, src: pointer) {.compilerproc, inline,
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deprecated: "old compiler compat".} = asgnRef(dest, src)
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type
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MemRegion = object
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proc alloc(r: var MemRegion, size: int): pointer =
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result = alloc(size)
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proc alloc0Impl(r: var MemRegion, size: int): pointer =
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result = alloc0Impl(size)
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proc dealloc(r: var MemRegion, p: pointer) = dealloc(p)
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proc deallocOsPages(r: var MemRegion) = discard
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proc deallocOsPages() = discard
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