虚拟内存分配器建议？ [英] Virtual memory allocator recommendations?
问题描述
我有一种情况，我需要能够在
未映射的虚拟内存上分配块。
因为我分配的内存不是没有映射，我不能使用普通的
内存分配器，因为大多数人都希望在未使用的漏洞中存储关于
免费列表的元数据堆。相反，我需要一个内存来支持存储其元数据的内存（反过来说，一个
简单的malloc（）堆就可以了）。
有没有人知道这样的野兽？
这种东西对于分配任何类似内存很有用
资源，例如文件中的空格，或一天中的时间块，或者某种东西。所以我肯定他们在那里;我找不到任何......
-
a ?? a ?? a ?? a ?? ???????? * ?????????????????????????????????一个??一个??一个??一个??的ΔΣ http://www.cowlark.com a ?? a ?? a ?? a？ ？a ??
a ?? ......不是那个精心设计的GUI很少见，只是
a ??三臂用户GUI'的设计很少见。 --- Mike Uhl on
a ?? afc
I have a situation where I need to be able to allocate chunks on
unmapped virtual memory.
Because the memory I''m allocating isn''t mapped, I can''t use a normal
memory allocator, as most of them want to store their metadata about the
free list in the unused holes in the heap. Instead, I need a memory
allocator that stores its metadata out-of-line (perversely enough, a
simple malloc() heap would be fine for that).
Does anyone know of such a beast?
This sort of thing would be useful for allocating any memory-like
resource, such as space in a file, or blocks of time in a day, or that
sort of thing. So I''m sure they''re out there; I just can''t find any...
--
a??a??a??a?? ????????*????????????????????????????????? a??a??a??a??a?? http://www.cowlark.com a??a??a??a??a??
a?? "...it''s not that well-designed GUI''s are rare, it''s just that the
a?? three-armed users GUI''s are designed for are rare." --- Mike Uhl on
a?? a.f.c
推荐答案
David Given写道：
David Given wrote:
我有一个需要的情况能够在
未映射的虚拟内存上分配块。
因为我分配的内存没有映射，所以我不能使用一个正常的内存分配器，因为他们中的大多数都希望将关于
空闲列表的元数据存储在堆中未使用的漏洞中。相反，我需要一个内存来支持存储其元数据的内存（反过来说，一个
简单的malloc（）堆就可以了）。
有没有人知道这样的野兽？
I have a situation where I need to be able to allocate chunks on
unmapped virtual memory.
Because the memory I''m allocating isn''t mapped, I can''t use a normal
memory allocator, as most of them want to store their metadata about the
free list in the unused holes in the heap. Instead, I need a memory
allocator that stores its metadata out-of-line (perversely enough, a
simple malloc() heap would be fine for that).
Does anyone know of such a beast?
这对系统特定的API来说并不难，但是我不要认为标准C中有什么价值。所以你最好在平台上询问
特定群体，这种访问水平趋向于特定于平台。
-
Ian Collins。
It''s not hard to do with system specific APIs, but I don''t think there''s
a what in standard C. So you''d be better off asking in a platform
specific group, this level of access tends to be very platform specific.
--
Ian Collins.
Ian Collins写道：
Ian Collins wrote:
David Given写道：
David Given wrote:
>我有一种情况我需要能够分配
未映射的虚拟内存上的块。
因为我分配的内存没有映射，所以我不能使用正常的内存分配器，因为大多数他们想要存储关于
免费lis的元数据在堆中未使用的孔中。相反，我需要一个内存分配器来存储其元数据的外联（反过来说，一个简单的malloc（）堆就可以了）。
有谁知道这样的野兽？
>I have a situation where I need to be able to allocate chunks on
unmapped virtual memory.
Because the memory I''m allocating isn''t mapped, I can''t use a normal
memory allocator, as most of them want to store their metadata about the
free list in the unused holes in the heap. Instead, I need a memory
allocator that stores its metadata out-of-line (perversely enough, a
simple malloc() heap would be fine for that).
Does anyone know of such a beast?
使用系统特定的API并不难，但我不认为有这样的>
a标准C中的内容。所以你最好在平台上询问
特定组，这种访问级别往往是非常特定于平台的。
It''s not hard to do with system specific APIs, but I don''t think there''s
a what in standard C. So you''d be better off asking in a platform
specific group, this level of access tends to be very platform specific.
糟糕，使用标准C中的方式。
-
Ian Collins。
Oops, make that "way in standard C".
--
Ian Collins.
Ian Collins< ia ****** @ hotmail.comwrites：
Ian Collins <ia******@hotmail.comwrites:
David Given写道：
David Given wrote:
>我有一种情况需要能够在未映射的虚拟内存上分配块。
因为内存我'分配没有映射，我不能正常使用
m emory allocator，因为他们中的大多数都希望将关于
空闲列表的元数据存储在堆中未使用的漏洞中。相反，我需要一个内存分配器来存储其元数据的外联（反过来说，一个简单的malloc（）堆就可以了）。
有谁知道这样的野兽？
>I have a situation where I need to be able to allocate chunks on
unmapped virtual memory.
Because the memory I''m allocating isn''t mapped, I can''t use a normal
memory allocator, as most of them want to store their metadata about the
free list in the unused holes in the heap. Instead, I need a memory
allocator that stores its metadata out-of-line (perversely enough, a
simple malloc() heap would be fine for that).
Does anyone know of such a beast?
使用系统特定的API并不难，但我不认为有这样的>
a标准C中的内容。所以你最好在平台上询问
特定组，这种访问级别往往是非常特定于平台的。
It''s not hard to do with system specific APIs, but I don''t think there''s
a what in standard C. So you''d be better off asking in a platform
specific group, this level of access tends to be very platform specific.
实际上，他正在尝试做的事情听起来并不是特定于系统特定的。正如他在原始文章中写道的那样：
这类事情对于分配任何类似内存的资源（例如文件中的空格）非常有用，或者一天中的时间块，或者说是b / b $ b。所以我肯定他们在那里;我不能
找到任何...
所以他正在寻找的是一种从某个范围分配块的方法
of lt（内存地址，文件偏移量，一天中的时间）没有
存储元数据和分配的块。他可以像分配数字范围一样。
我认为问题更多的是关于算法和数据结构而不是
关于任何特定系统甚至任何特定语言，所以
comp.programming可能是最好的问题。
-
Keith Thompson（The_Other_Keith） ks***@mib.org < http：//www.ghoti.net/~ kst>
诺基亚
"我们必须做点什么。这是事情。因此，我们必须这样做。
- Antony Jay和Jonathan Lynn，是部长
Actually, what he''s trying to do doesn''t sound very system specific to
me. As he wrote in the original article:
This sort of thing would be useful for allocating any memory-like
resource, such as space in a file, or blocks of time in a day, or
that sort of thing. So I''m sure they''re out there; I just can''t
find any...
So what he''s looking for is a way to allocate chunks out of some range
of <whatever(memory addresses, file offsets, times of day) without
storing metadata alongside the allocated chunks. He could just as
well be allocating ranges of numbers.
I think the question is more about algorithms and data structures than
about any particular system or even any particular language, so
comp.programming is probably the best place to ask.
--
Keith Thompson (The_Other_Keith) ks***@mib.org <http://www.ghoti.net/~kst>
Nokia
"We must do something. This is something. Therefore, we must do this."
-- Antony Jay and Jonathan Lynn, "Yes Minister"
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