66 lines
2.1 KiB
C
66 lines
2.1 KiB
C
/****************************************************************
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* *
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* Copyright 2001, 2011 Fidelity Information Services, Inc *
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* *
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* This source code contains the intellectual property *
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* of its copyright holder(s), and is made available *
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* under a license. If you do not know the terms of *
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* the license, please stop and do not read further. *
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* *
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****************************************************************/
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#ifndef CACHE_H
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#define CACHE_H
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/* Macros to add debugging to objcode cache for indirects. To enable, uncomment line below */
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/*#define DEBUG_CACHE */
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#ifdef DEBUG_CACHE
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# define DBGCACHE(x) DBGFPF(x)
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#else
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# define DBGCACHE(x)
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#endif
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typedef struct {
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mstr str;
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uint4 code;
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} icode_str; /* For indirect code source. */
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typedef struct cache_ent
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{
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mstr obj;
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icode_str src;
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int refcnt; /* Number of indirect source code pointing to same cache entry */
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int zb_refcnt; /* Number of zbreak action entry pointing to same cache entry */
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} cache_entry;
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/* Following is the indirect routine header build as part of an indirect code object */
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typedef struct ihead_struct
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{
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cache_entry *indce;
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int4 vartab_off;
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int4 vartab_len;
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int4 temp_mvals;
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int4 temp_size;
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int4 fixup_vals_off; /* literal mval table offset */
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int4 fixup_vals_num; /* literal mval table's mval count */
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} ihdtyp;
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#define ICACHE_TABLE_INIT_SIZE 64 /* Use 1K memory initially */
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#define ICACHE_SIZE ROUND_UP2(SIZEOF(cache_entry), NATIVE_WSIZE)
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/* We allow cache_table to grow till we hit memory or entry maximums. If more memory is needed, we do compaction.
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* Current default limits (overrideable by environment variable): 128 entries, 128KB of object code on all platforms
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* except IA64 architecture which gets 256KB due to its less compact instruction forms.
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*/
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#define MAX_CACHE_MEMSIZE (IA64_ONLY(256) NON_IA64_ONLY(128))
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#define MAX_CACHE_ENTRIES 128
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void indir_lits(ihdtyp *ihead);
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void cache_init(void);
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mstr *cache_get(icode_str *indir_src);
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void cache_put(icode_str *src, mstr *object);
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void cache_table_rebuild(void);
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void cache_stats(void);
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#endif
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