Share memory blocks between pool allocators
gcc/
* Makefile.in: Add memory-block.cc
(pool_allocator::initialize): Use fixed block size.
(pool_allocator::release): Use memory_block_pool.
(pool_allocator::allocate): Likewise.
* asan.c (asan_mem_ref_pool): Adjust to use common block size in all
object pools.
* cfg.c (initialize_original_copy_tables): Likewise.
* cselib.c (elt_list_pool, elt_loc_list_pool,
cselib_val_pool): Likewise.
* df-problems.c (df_chain_alloc): Likewise.
* df-scan.c (df_scan_alloc): Likewise.
* dse.c (cse_store_info_pool, rtx_store_info_pool,
read_info_type_pool, insn_info_type_pool, bb_info_pool,
group_info_pool, deferred_change_pool): Likewise.
* et-forest.c (et_nodes, et_occurrences): Likewise.
* ipa-cp.c (ipcp_cst_values_pool, ipcp_sources_pool,
ipcp_agg_lattice_pool): Likewise.
* ipa-inline-analysis.c (edge_predicate_pool): Likewise.
* ipa-profile.c (histogram_pool): Likewise.
* ipa-prop.c (ipa_refdesc_pool): Likewise.
* ira-build.c (live_range_pool, allocno_pool, object_pool,
initiate_cost_vectors, pref_pool, copy_pool): Likewise.
* ira-color.c (update_cost_record_pool): Likewise.
* lra-lives.c (lra_live_range_pool): Likewise.
* lra.c (lra_insn_reg_pool, lra_copy_pool): Likewise.
* memory-block.cc: New file.
* memory-block.h: New file.
* regcprop.c (queued_debug_insn_change_pool): Use common block size.
* sched-deps.c (sched_deps_init): Likewise.
* sel-sched-ir.c (sched_lists_pool): Likewise.
* stmt.c (expand_case, expand_sjlj_dispatch_table): Likewise.
* tree-sra.c (access_pool): Likewise.
* tree-ssa-math-opts.c (pass_cse_reciprocals::execute): Likewise.
* tree-ssa-pre.c (pre_expr_pool, bitmap_set_pool): Likewise.
* tree-ssa-reassoc.c (operand_entry_pool): Likewise.
* tree-ssa-sccvn.c (allocate_vn_table): Likewise.
* tree-ssa-strlen.c (strinfo_pool): Likewise.
* tree-ssa-structalias.c (variable_info_pool): Likewise.
* var-tracking.c (attrs_def_pool, var_pool, valvar_pool,
location_chain_pool, shared_hash_pool, loc_exp_dep_pool): Likewise.
gcc/c-family/
* c-format.c (check_format_arg): Adjust to use common block size in all
object pools.
From-SVN: r227817
2015-09-16 02:56:54 +02:00
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/* Shared pool of memory blocks for pool allocators.
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2017-01-01 13:07:43 +01:00
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Copyright (C) 2015-2017 Free Software Foundation, Inc.
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Share memory blocks between pool allocators
gcc/
* Makefile.in: Add memory-block.cc
(pool_allocator::initialize): Use fixed block size.
(pool_allocator::release): Use memory_block_pool.
(pool_allocator::allocate): Likewise.
* asan.c (asan_mem_ref_pool): Adjust to use common block size in all
object pools.
* cfg.c (initialize_original_copy_tables): Likewise.
* cselib.c (elt_list_pool, elt_loc_list_pool,
cselib_val_pool): Likewise.
* df-problems.c (df_chain_alloc): Likewise.
* df-scan.c (df_scan_alloc): Likewise.
* dse.c (cse_store_info_pool, rtx_store_info_pool,
read_info_type_pool, insn_info_type_pool, bb_info_pool,
group_info_pool, deferred_change_pool): Likewise.
* et-forest.c (et_nodes, et_occurrences): Likewise.
* ipa-cp.c (ipcp_cst_values_pool, ipcp_sources_pool,
ipcp_agg_lattice_pool): Likewise.
* ipa-inline-analysis.c (edge_predicate_pool): Likewise.
* ipa-profile.c (histogram_pool): Likewise.
* ipa-prop.c (ipa_refdesc_pool): Likewise.
* ira-build.c (live_range_pool, allocno_pool, object_pool,
initiate_cost_vectors, pref_pool, copy_pool): Likewise.
* ira-color.c (update_cost_record_pool): Likewise.
* lra-lives.c (lra_live_range_pool): Likewise.
* lra.c (lra_insn_reg_pool, lra_copy_pool): Likewise.
* memory-block.cc: New file.
* memory-block.h: New file.
* regcprop.c (queued_debug_insn_change_pool): Use common block size.
* sched-deps.c (sched_deps_init): Likewise.
* sel-sched-ir.c (sched_lists_pool): Likewise.
* stmt.c (expand_case, expand_sjlj_dispatch_table): Likewise.
* tree-sra.c (access_pool): Likewise.
* tree-ssa-math-opts.c (pass_cse_reciprocals::execute): Likewise.
* tree-ssa-pre.c (pre_expr_pool, bitmap_set_pool): Likewise.
* tree-ssa-reassoc.c (operand_entry_pool): Likewise.
* tree-ssa-sccvn.c (allocate_vn_table): Likewise.
* tree-ssa-strlen.c (strinfo_pool): Likewise.
* tree-ssa-structalias.c (variable_info_pool): Likewise.
* var-tracking.c (attrs_def_pool, var_pool, valvar_pool,
location_chain_pool, shared_hash_pool, loc_exp_dep_pool): Likewise.
gcc/c-family/
* c-format.c (check_format_arg): Adjust to use common block size in all
object pools.
From-SVN: r227817
2015-09-16 02:56:54 +02:00
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3, or (at your option)
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any later version.
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GCC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING3. If not see
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<http://www.gnu.org/licenses/>. */
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#ifndef MEMORY_BLOCK_H
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#define MEMORY_BLOCK_H
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/* Shared pool which allows other memory pools to reuse each others' allocated
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memory blocks instead of calling free/malloc again. */
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class memory_block_pool
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{
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public:
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/* Blocks have fixed size. This is necessary for sharing. */
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static const size_t block_size = 64 * 1024;
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memory_block_pool ();
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static inline void *allocate () ATTRIBUTE_MALLOC;
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static inline void release (void *);
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void clear_free_list ();
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private:
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/* memory_block_pool singleton instance, defined in memory-block.cc. */
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static memory_block_pool instance;
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struct block_list
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{
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block_list *m_next;
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};
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/* Free list. */
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block_list *m_blocks;
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};
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/* Allocate a single block. Reuse a previously returned block, if possible. */
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inline void *
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memory_block_pool::allocate ()
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{
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if (instance.m_blocks == NULL)
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return XNEWVEC (char, block_size);
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void *result = instance.m_blocks;
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instance.m_blocks = instance.m_blocks->m_next;
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2015-09-23 04:31:14 +02:00
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VALGRIND_DISCARD (VALGRIND_MAKE_MEM_UNDEFINED (result, block_size));
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Share memory blocks between pool allocators
gcc/
* Makefile.in: Add memory-block.cc
(pool_allocator::initialize): Use fixed block size.
(pool_allocator::release): Use memory_block_pool.
(pool_allocator::allocate): Likewise.
* asan.c (asan_mem_ref_pool): Adjust to use common block size in all
object pools.
* cfg.c (initialize_original_copy_tables): Likewise.
* cselib.c (elt_list_pool, elt_loc_list_pool,
cselib_val_pool): Likewise.
* df-problems.c (df_chain_alloc): Likewise.
* df-scan.c (df_scan_alloc): Likewise.
* dse.c (cse_store_info_pool, rtx_store_info_pool,
read_info_type_pool, insn_info_type_pool, bb_info_pool,
group_info_pool, deferred_change_pool): Likewise.
* et-forest.c (et_nodes, et_occurrences): Likewise.
* ipa-cp.c (ipcp_cst_values_pool, ipcp_sources_pool,
ipcp_agg_lattice_pool): Likewise.
* ipa-inline-analysis.c (edge_predicate_pool): Likewise.
* ipa-profile.c (histogram_pool): Likewise.
* ipa-prop.c (ipa_refdesc_pool): Likewise.
* ira-build.c (live_range_pool, allocno_pool, object_pool,
initiate_cost_vectors, pref_pool, copy_pool): Likewise.
* ira-color.c (update_cost_record_pool): Likewise.
* lra-lives.c (lra_live_range_pool): Likewise.
* lra.c (lra_insn_reg_pool, lra_copy_pool): Likewise.
* memory-block.cc: New file.
* memory-block.h: New file.
* regcprop.c (queued_debug_insn_change_pool): Use common block size.
* sched-deps.c (sched_deps_init): Likewise.
* sel-sched-ir.c (sched_lists_pool): Likewise.
* stmt.c (expand_case, expand_sjlj_dispatch_table): Likewise.
* tree-sra.c (access_pool): Likewise.
* tree-ssa-math-opts.c (pass_cse_reciprocals::execute): Likewise.
* tree-ssa-pre.c (pre_expr_pool, bitmap_set_pool): Likewise.
* tree-ssa-reassoc.c (operand_entry_pool): Likewise.
* tree-ssa-sccvn.c (allocate_vn_table): Likewise.
* tree-ssa-strlen.c (strinfo_pool): Likewise.
* tree-ssa-structalias.c (variable_info_pool): Likewise.
* var-tracking.c (attrs_def_pool, var_pool, valvar_pool,
location_chain_pool, shared_hash_pool, loc_exp_dep_pool): Likewise.
gcc/c-family/
* c-format.c (check_format_arg): Adjust to use common block size in all
object pools.
From-SVN: r227817
2015-09-16 02:56:54 +02:00
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return result;
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}
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/* Return UNCAST_BLOCK to the pool. */
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inline void
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memory_block_pool::release (void *uncast_block)
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{
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block_list *block = new (uncast_block) block_list;
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block->m_next = instance.m_blocks;
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instance.m_blocks = block;
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}
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extern void *mempool_obstack_chunk_alloc (size_t) ATTRIBUTE_MALLOC;
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extern void mempool_obstack_chunk_free (void *);
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#endif /* MEMORY_BLOCK_H */
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