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Overview
Comment: | README addition |
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Downloads: | Tarball | ZIP archive | SQL archive |
Timelines: | family | ancestors | descendants | both | mig-alloc-reform |
Files: | files | file ages | folders |
SHA1: |
3e9d5dacd9555786bb5aca9b32ec23e1 |
User & Date: | mig 2011-03-18 13:32:33 |
Context
2011-03-18
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16:16 | New function TclAllocMaximize(). Let tclListObj.c find out the real allocated size, thus reducing th... check-in: b8f22672b2 user: mig tags: mig-alloc-reform | |
13:32 | README addition check-in: 3e9d5dacd9 user: mig tags: mig-alloc-reform | |
13:25 | README addition check-in: bba5f24346 user: mig tags: mig-alloc-reform | |
Changes
Changes to README.mig-alloc-reform.
1 2 3 4 5 6 7 8 9 10 11 | What is mig-alloc-reform? 1. A massive simplification of the memory management in Tcl core. a. removal of the Tcl stack, each BC allocates its own stacklet b. TclStackAlloc is gone, replaced with ckalloc; goodbye to sometimes hard sync problems c. removal of the allocCache slot in struct Interp d. retirement of the (unused) Tcl allocator USE_TCLALLOC; replacement with a single-thread special case of zippy e. unify all allocator options in a single file tclAlloc.c d. exploit fast TSD via __thread where available (autoconferry still missing, enable by hand with -DHAVE_FAST_TSD) | | | > > | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 | What is mig-alloc-reform? 1. A massive simplification of the memory management in Tcl core. a. removal of the Tcl stack, each BC allocates its own stacklet b. TclStackAlloc is gone, replaced with ckalloc; goodbye to sometimes hard sync problems c. removal of the allocCache slot in struct Interp d. retirement of the (unused) Tcl allocator USE_TCLALLOC; replacement with a single-thread special case of zippy e. unify all allocator options in a single file tclAlloc.c d. exploit fast TSD via __thread where available (autoconferry still missing, enable by hand with -DHAVE_FAST_TSD) f. small improvements in zippy's memory usage: . try to split blocks in the shared cache before allocating new ones from the system . use the same bucket for Tcl_Objs and smallest allocs 2. New allocator options a. purify build (but stop using them, see below). This is suitable to use with a preloaded malloc replacement b. (~NEW) native build: call to sys malloc, but maintain zippy's Tcl_Obj caches (per thread, if threads enabled). Can be switched to run as a purify build via an env var at startup. This is suitable to |
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