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rewrite frontend unwind cache to always preserve stale results until a new unwind successfully completes

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This commit is contained in:
Ryan Fleury
2024-05-23 11:16:34 -07:00
parent f26b4c3b06
commit bc40d1c0b0
3 changed files with 80 additions and 85 deletions
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src/df/core/df_core.h
+17 -16
View File
@@ -946,29 +946,33 @@ struct DF_AutoViewRuleMapCache
DF_AutoViewRuleSlot *slots;
};
//- rjf: per-run unwind cache
//- rjf: per-thread unwind cache
typedef struct DF_RunUnwindCacheNode DF_RunUnwindCacheNode;
struct DF_RunUnwindCacheNode
typedef struct DF_UnwindCacheNode DF_UnwindCacheNode;
struct DF_UnwindCacheNode
{
DF_RunUnwindCacheNode *hash_next;
DF_UnwindCacheNode *next;
DF_UnwindCacheNode *prev;
U64 reggen;
U64 memgen;
Arena *arena;
DF_Handle thread;
CTRL_Unwind unwind;
};
typedef struct DF_RunUnwindCacheSlot DF_RunUnwindCacheSlot;
struct DF_RunUnwindCacheSlot
typedef struct DF_UnwindCacheSlot DF_UnwindCacheSlot;
struct DF_UnwindCacheSlot
{
DF_RunUnwindCacheNode *first;
DF_RunUnwindCacheNode *last;
DF_UnwindCacheNode *first;
DF_UnwindCacheNode *last;
};
typedef struct DF_RunUnwindCache DF_RunUnwindCache;
struct DF_RunUnwindCache
typedef struct DF_UnwindCache DF_UnwindCache;
struct DF_UnwindCache
{
Arena *arena;
U64 slots_count;
DF_RunUnwindCacheSlot *slots;
DF_UnwindCacheSlot *slots;
DF_UnwindCacheNode *free_node;
};
//- rjf: per-run tls-base-vaddr cache
@@ -1146,10 +1150,7 @@ struct DF_State
DF_AutoViewRuleMapCache auto_view_rule_cache;
// rjf: per-run caches
U64 unwind_cache_reggen_idx;
U64 unwind_cache_memgen_idx;
DF_RunUnwindCache unwind_caches[2];
U64 unwind_cache_gen;
DF_UnwindCache unwind_cache;
U64 tls_base_cache_reggen_idx;
U64 tls_base_cache_memgen_idx;
DF_RunTLSBaseCache tls_base_caches[2];