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https://github.com/jemalloc/jemalloc.git
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6396e44a3c
Both components had a four-way split (_types, _structs, _externs, _inlines) that predates explicit per-file includes. With the edata <-> prof_types coupling broken in the prior commit, merging _types + _structs + _externs no longer risks an include cycle. - prof.h replaces prof_types.h + prof_structs.h + prof_externs.h. - tcache.h replaces tcache_types.h + tcache_structs.h + tcache_externs.h. prof_inlines.h and tcache_inlines.h stay separate: prof_inlines.h sits at the bottom of the dependency layering, and tcache_inlines.h's include of arena_externs.h is the asymmetric cycle-breaker that keeps the arena <-> tcache symbol cycle from becoming an include cycle.
81 lines
3.6 KiB
C
81 lines
3.6 KiB
C
#ifndef JEMALLOC_INTERNAL_INCLUDES_H
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#define JEMALLOC_INTERNAL_INCLUDES_H
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/*
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* jemalloc can conceptually be broken into components (arena, tcache, etc.),
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* but there are circular dependencies that cannot be broken without
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* substantial performance degradation.
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*
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* Historically, we dealt with this by each header into four sections (types,
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* structs, externs, and inlines), and included each header file multiple times
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* in this file, picking out the portion we want on each pass using the
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* following #defines:
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* JEMALLOC_H_TYPES : Preprocessor-defined constants and pseudo-opaque data
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* types.
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* JEMALLOC_H_STRUCTS : Data structures.
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* JEMALLOC_H_EXTERNS : Extern data declarations and function prototypes.
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* JEMALLOC_H_INLINES : Inline functions.
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*
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* We're moving toward a world in which the dependencies are explicit; each file
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* will #include the headers it depends on (rather than relying on them being
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* implicitly available via this file including every header file in the
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* project).
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*
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* We're now in an intermediate state: we've broken up the header files to avoid
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* having to include each one multiple times, but have not yet moved the
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* dependency information into the header files (i.e. we still rely on the
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* ordering in this file to ensure all a header's dependencies are available in
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* its translation unit). Each component is now broken up into multiple header
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* files, corresponding to the sections above (e.g. instead of "foo.h", we now
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* have "foo_types.h", "foo_structs.h", "foo_externs.h", "foo_inlines.h").
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*
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* Those files which have been converted to explicitly include their
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* inter-component dependencies are now in the initial HERMETIC HEADERS
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* section. All headers may still rely on jemalloc_preamble.h (which, by fiat,
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* must be included first in every translation unit) for system headers and
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* global jemalloc definitions, however.
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*/
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/******************************************************************************/
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/* TYPES */
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/******************************************************************************/
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#include "jemalloc/internal/arena_types.h"
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/******************************************************************************/
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/* STRUCTS */
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/******************************************************************************/
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#include "jemalloc/internal/arena_structs.h"
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/******************************************************************************/
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/* EXTERNS */
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/******************************************************************************/
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#include "jemalloc/internal/jemalloc_internal_externs.h"
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#include "jemalloc/internal/arena_externs.h"
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#include "jemalloc/internal/large.h"
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#include "jemalloc/internal/tcache.h"
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#include "jemalloc/internal/malloc_dispatch.h"
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#include "jemalloc/internal/prof.h"
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#include "jemalloc/internal/background_thread.h"
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/******************************************************************************/
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/* INLINES */
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/******************************************************************************/
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#include "jemalloc/internal/jemalloc_internal_inlines_a.h"
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/*
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* Include portions of arena code interleaved with tcache code in order to
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* resolve circular dependencies.
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*/
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#include "jemalloc/internal/arena_inlines_a.h"
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#include "jemalloc/internal/jemalloc_internal_inlines_b.h"
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#include "jemalloc/internal/tcache_inlines.h"
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#include "jemalloc/internal/arena_inlines_b.h"
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#include "jemalloc/internal/malloc_dispatch_inlines.h"
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#include "jemalloc/internal/jemalloc_internal_inlines_c.h"
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#include "jemalloc/internal/prof_inlines.h"
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#include "jemalloc/internal/background_thread_inlines.h"
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#endif /* JEMALLOC_INTERNAL_INCLUDES_H */
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