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https://gitea.wildfiregames.com/0ad/0ad
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2e5d9452aa
move all except user-specified config choices out of config.h and into appropriate headers CPU_IA32 -> ARCH_IA32 wsdl: disable use of ddraw (will soon be replaced by WMI) use shared_ptr without namespace qualifier (it's in tr1) debug_warn -> debug_assert(0) LIB_API to allow building as DLL smart pointers: reduce use of .get() cache_adt: use map instead of hash_map (avoids needing a hashCompare class). also remove spurious warning code_annotation.h: better cassert implementation move FPS measuring portion of timer.cpp into frequency_filter move include of memory headers into mmgr.h (to avoid errors, we must ensure they are included if mmgr is used) posix_filesystem.h: move definition of mkdir to wfilesystem stl: disable iterator checks in release mode wmi: fix COM init bug, use smart pointers wutil: add code to get DLL module handle (if compiled as such), add WinScopedLock timer: fix handling of raw ticks This was SVN commit r5517.
105 lines
2.5 KiB
C++
105 lines
2.5 KiB
C++
/**
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* =========================================================================
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* File : pool.cpp
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* Project : 0 A.D.
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* Description : pool allocator
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* =========================================================================
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*/
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// license: GPL; see lib/license.txt
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#include "precompiled.h"
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#include "pool.h"
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#include "mem_util.h"
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LibError pool_create(Pool* p, size_t max_size, size_t el_size)
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{
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if(el_size == POOL_VARIABLE_ALLOCS)
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p->el_size = 0;
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else
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p->el_size = mem_RoundUpToAlignment(el_size);
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p->freelist = 0;
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RETURN_ERR(da_alloc(&p->da, max_size));
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return INFO::OK;
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}
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LibError pool_destroy(Pool* p)
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{
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// don't be picky and complain if the freelist isn't empty;
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// we don't care since it's all part of the da anyway.
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// however, zero it to prevent further allocs from succeeding.
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p->freelist = 0;
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return da_free(&p->da);
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}
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bool pool_contains(const Pool* p, void* el)
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{
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// outside of our range
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if(!(p->da.base <= el && el < p->da.base+p->da.pos))
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return false;
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// sanity check: it should be aligned (if pool has fixed-size elements)
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if(p->el_size)
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debug_assert((uintptr_t)((u8*)el - p->da.base) % p->el_size == 0);
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return true;
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}
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void* pool_alloc(Pool* p, size_t size)
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{
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// if pool allows variable sizes, go with the size parameter,
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// otherwise the pool el_size setting.
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const size_t el_size = p->el_size? p->el_size : mem_RoundUpToAlignment(size);
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// note: this can never happen in pools with variable-sized elements
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// because they disallow pool_free.
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void* el = mem_freelist_Detach(p->freelist);
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if(el)
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goto have_el;
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// alloc a new entry
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{
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// expand, if necessary
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if(da_reserve(&p->da, el_size) < 0)
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return 0;
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el = p->da.base + p->da.pos;
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p->da.pos += el_size;
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}
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have_el:
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debug_assert(pool_contains(p, el)); // paranoia
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return el;
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}
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void pool_free(Pool* p, void* el)
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{
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// only allowed to free items if we were initialized with
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// fixed el_size. (this avoids having to pass el_size here and
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// check if requested_size matches that when allocating)
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if(p->el_size == 0)
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{
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debug_assert(0); // cannot free variable-size items
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return;
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}
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if(pool_contains(p, el))
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mem_freelist_AddToFront(p->freelist, el);
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else
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debug_assert(0); // invalid pointer (not in pool)
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}
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void pool_free_all(Pool* p)
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{
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p->freelist = 0;
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// must be reset before da_set_size or CHECK_DA will complain.
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p->da.pos = 0;
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da_set_size(&p->da, 0);
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}
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