From: notaz Date: Sat, 19 Oct 2024 21:19:50 +0000 (+0300) Subject: cdriso: try some different buffering X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=41846131f9579147fb6bb1d5e32516ac21746e0f;p=pcsx_rearmed.git cdriso: try some different buffering --- diff --git a/Makefile b/Makefile index ac5eab9d..7c534224 100644 --- a/Makefile +++ b/Makefile @@ -2,8 +2,16 @@ # default stuff goes here, so that config can override TARGET ?= pcsx -CFLAGS += -Wall -ggdb -Iinclude -ffast-math -ifndef DEBUG +CFLAGS += -Wall -Iinclude -ffast-math + +DEBUG ?= 0 +DEBUG_SYMS ?= 0 +ASSERTS ?= 0 +HAVE_CHD ?= 1 +ifneq ($(DEBUG)$(DEBUG_SYMS), 00) +CFLAGS += -ggdb +endif +ifneq ($(DEBUG), 1) CFLAGS += -O2 ifndef ASSERTS CFLAGS += -DNDEBUG diff --git a/libpcsxcore/cdriso.c b/libpcsxcore/cdriso.c index ff20731d..9b98fbe5 100644 --- a/libpcsxcore/cdriso.c +++ b/libpcsxcore/cdriso.c @@ -54,7 +54,6 @@ unsigned int cdrIsoMultidiskCount; unsigned int cdrIsoMultidiskSelect; static FILE *cdHandle = NULL; -static FILE *cddaHandle = NULL; static FILE *subHandle = NULL; static boolean subChanMixed = FALSE; @@ -173,6 +172,24 @@ static off_t get_size(FILE *f) return size; } +// Some c libs like newlib default buffering to just 1k which is less than +// cd sector size which is bad for performance. +// Note that NULL setvbuf() is implemented differently by different libs +// (newlib mallocs a buffer of given size and glibc ignores size and uses it's own). +static void set_static_stdio_buffer(FILE *f) +{ +#if !defined(fopen) // no stdio redirect + static char buf[16 * 1024]; + if (f) { + int r; + errno = 0; + r = setvbuf(f, buf, _IOFBF, sizeof(buf)); + if (r) + SysPrintf("cdriso: setvbuf %d %d\n", r, errno); + } +#endif +} + // this function tries to get the .toc file of the given .bin // the necessary data is put into the ti (trackinformation)-array static int parsetoc(const char *isofile) { @@ -493,6 +510,7 @@ static int parsecue(const char *isofile) { fclose(cdHandle); cdHandle = ti[1].handle; ti[1].handle = NULL; + set_static_stdio_buffer(cdHandle); } return 0; } @@ -952,13 +970,23 @@ fail_io: static int handlechd(const char *isofile) { int frame_offset = 150; int file_offset = 0; + int is_chd_ext = 0; + chd_error err; + if (strlen(isofile) >= 3) { + const char *ext = isofile + strlen(isofile) - 3; + is_chd_ext = !strcasecmp(ext, "chd"); + } chd_img = calloc(1, sizeof(*chd_img)); if (chd_img == NULL) goto fail_io; - if(chd_open(isofile, CHD_OPEN_READ, NULL, &chd_img->chd) != CHDERR_NONE) + err = chd_open_file(cdHandle, CHD_OPEN_READ, NULL, &chd_img->chd); + if (err != CHDERR_NONE) { + if (is_chd_ext) + SysPrintf("chd_open: %d\n", err); goto fail_io; + } if (Config.CHD_Precache && (chd_precache(chd_img->chd) != CHDERR_NONE)) goto fail_io; @@ -1051,9 +1079,8 @@ static int opensubfile(const char *isoname) { } subHandle = fopen(subname, "rb"); - if (subHandle == NULL) { + if (subHandle == NULL) return -1; - } return 0; } @@ -1373,6 +1400,7 @@ int ISOopen(const char *fname) fname, strerror(errno)); return -1; } + set_static_stdio_buffer(cdHandle); size_main = get_size(cdHandle); snprintf(image_str, sizeof(image_str) - 6*4 - 1, @@ -1417,8 +1445,6 @@ int ISOopen(const char *fname) ISOgetBuffer = ISOgetBuffer_chd; cdimg_read_func = cdread_chd; cdimg_read_sub_func = cdread_sub_chd; - fclose(cdHandle); - cdHandle = NULL; } #endif @@ -1452,6 +1478,7 @@ int ISOopen(const char *fname) bin_filename = alt_bin_filename; fclose(cdHandle); cdHandle = tmpf; + set_static_stdio_buffer(cdHandle); size_main = get_size(cdHandle); } } @@ -1496,7 +1523,6 @@ int ISOclose(void) fclose(subHandle); subHandle = NULL; } - cddaHandle = NULL; if (compr_img != NULL) { free(compr_img->index_table);