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util/chd.cpp: Made a few more member functions return error conditions.

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Also mark error paths as unexpected to optimise against them.
This commit is contained in:
Vas Crabb 2024-10-13 01:55:43 +11:00
parent 4ece8c5c1a
commit 46521af559
2 changed files with 503 additions and 492 deletions
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983
src/lib/util/chd.cpp
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12
src/lib/util/chd.h
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@ -2,8 +2,6 @@
// copyright-holders:Aaron Giles
/***************************************************************************
chd.h
MAME Compressed Hunks of Data file format
***************************************************************************/
@ -374,10 +372,10 @@ private:
// inline helpers
util::sha1_t be_read_sha1(const uint8_t *base) const noexcept;
void be_write_sha1(uint8_t *base, util::sha1_t value) noexcept;
void file_read(uint64_t offset, void *dest, uint32_t length) const;
void file_write(uint64_t offset, const void *source, uint32_t length);
std::error_condition file_read(uint64_t offset, void *dest, uint32_t length) const noexcept;
std::error_condition file_write(uint64_t offset, const void *source, uint32_t length) noexcept;
uint64_t file_append(const void *source, uint32_t length, uint32_t alignment = 0);
uint8_t bits_for_value(uint64_t value);
static uint8_t bits_for_value(uint64_t value) noexcept;
// internal helpers
uint32_t guess_unitbytes();
@ -389,12 +387,12 @@ private:
std::error_condition create_common();
std::error_condition open_common(bool writeable, const open_parent_func &open_parent);
void create_open_common();
void verify_proper_compression_append(uint32_t hunknum);
std::error_condition verify_proper_compression_append(uint32_t hunknum) const noexcept;
void hunk_write_compressed(uint32_t hunknum, int8_t compression, const uint8_t *compressed, uint32_t complength, util::crc16_t crc16);
void hunk_copy_from_self(uint32_t hunknum, uint32_t otherhunk);
void hunk_copy_from_parent(uint32_t hunknum, uint64_t parentunit);
std::error_condition metadata_find(chd_metadata_tag metatag, int32_t metaindex, metadata_entry &metaentry, bool resume = false) const noexcept;
void metadata_set_previous_next(uint64_t prevoffset, uint64_t nextoffset);
std::error_condition metadata_set_previous_next(uint64_t prevoffset, uint64_t nextoffset) noexcept;
void metadata_update_hash();
static int CLIB_DECL metadata_hash_compare(const void *elem1, const void *elem2);