diff options
Diffstat (limited to 'shells/ksh93/files/patch-src_lib_libast_features_mmap')
| -rw-r--r-- | shells/ksh93/files/patch-src_lib_libast_features_mmap | 191 |
1 files changed, 191 insertions, 0 deletions
diff --git a/shells/ksh93/files/patch-src_lib_libast_features_mmap b/shells/ksh93/files/patch-src_lib_libast_features_mmap new file mode 100644 index 000000000000..920291f31c18 --- /dev/null +++ b/shells/ksh93/files/patch-src_lib_libast_features_mmap @@ -0,0 +1,191 @@ +--- src/lib/libast/features/mmap.orig 2016-02-28 17:09:23 UTC ++++ src/lib/libast/features/mmap +@@ -16,14 +16,7 @@ tst lib_mmap note{ standard mmap interfa + + #define Failed(file) (remove(file),1) + +- int +- #if _STD_ +- main(int argc, char** argv) +- #else +- main(argc,argv) +- int argc; +- char** argv; +- #endif ++ int main(int argc, char** argv) + { + caddr_t mm; + char *file; +@@ -165,169 +158,18 @@ tst lib_mmap64 -D_LARGEFILE64_SOURCE not + } + }end + +-tst mmap_anon note{ use mmap MAP_ANON to get raw memory }end execute{ +- #if !_lib_mmap +- ( +- #endif +- #include <unistd.h> +- #include <fcntl.h> +- #include <sys/types.h> +- #include <sys/mman.h> +- #if defined(MAP_ANONYMOUS) && !defined(MAP_ANON) +- #define MAP_ANON MAP_ANONYMOUS +- #endif +- int +- main() +- { void *addr; +- addr = mmap(0,1024*1024,PROT_READ|PROT_WRITE,MAP_ANON|MAP_PRIVATE,-1,0); +- return (addr && addr != (void*)(-1)) ? 0 : 1; +- } +-}end +- +-tst mmap_devzero note{ use mmap on /dev/zero to get raw memory }end execute{ +- #if !_lib_mmap +- ( +- #endif +- #include <unistd.h> +- #include <fcntl.h> +- #include <sys/types.h> +- #include <sys/mman.h> +- int +- main() +- { int fd; +- void *addr; +- if((fd = open("/dev/zero", O_RDWR)) < 0) +- return 1; +- addr = mmap(0,1024*1024,PROT_READ|PROT_WRITE,MAP_PRIVATE,fd,0); +- return (addr && addr != (void*)(-1)) ? 0 : 1; +- } +-}end +- +-tst -D_LARGEFILE64_SOURCE note{ mmap is worth using }end output{ +- #if !_lib_mmap +- ( +- #endif +- #include <unistd.h> +- #include <fcntl.h> +- #include <string.h> +- #include <sys/types.h> +- #include <sys/mman.h> +- #include <sys/stat.h> +- #include <sys/times.h> +- +- #if _lib_mmap64 +- #undef mmap +- #define mmap mmap64 +- #endif +- +- #if _lib_munmap64 +- #undef munmap +- #define munmap munmap64 +- #endif +- +- #define MAPSIZE (64*1024) +- #define BUFSIZE (MAPSIZE/8) +- #define WRITE (64) +- #define RUN (64) +- +- #define Failed(file) (remove(file),1) +- +- int +- #if _STD_ +- main(int argc, char** argv) +- #else +- main(argc,argv) +- int argc; +- char** argv; +- #endif +- { +- caddr_t mm; +- char *file, *t; +- int i, fd, k, run; +- char buf[MAPSIZE]; +- struct tms stm, etm; +- clock_t rdtm, mmtm; +- +- file = argv[1]; +- if ((fd = open(file, O_CREAT|O_TRUNC|O_WRONLY, 0666)) < 0) +- return 1; +- +- for (i = 0; i < sizeof(buf); ++i) +- buf[i] = '0' + (i%10); +- for (i = 0; i < WRITE; ++i) +- if (write(fd,buf,sizeof(buf)) != sizeof(buf)) +- return Failed(file); +- close(fd); +- +- /* read time */ +- times(&stm); +- for(run = 0; run < RUN; ++run) +- { if((fd = open(file, O_RDWR)) < 0) +- return Failed(file); +- for (i = 0; i < WRITE; ++i) +- { for(k = 0; k < MAPSIZE; k += BUFSIZE) +- if (read(fd,buf,BUFSIZE) != BUFSIZE) +- return Failed(file); +- } +- close(fd); +- } +- times(&etm); +- rdtm = (etm.tms_utime-stm.tms_utime) + (etm.tms_stime-stm.tms_stime); +- +- /* mmap time */ +- times(&stm); +- for(run = 0; run < RUN; ++run) +- { if ((fd = open(file, O_RDWR)) < 0) +- return Failed(file); +- for(i = 0, mm = (caddr_t)0; i < WRITE; ++i) +- { if(mm) +- munmap(mm, MAPSIZE); +- mm = (caddr_t)mmap((caddr_t)0, MAPSIZE, +- (PROT_READ|PROT_WRITE), +- MAP_PRIVATE, fd, i*MAPSIZE ); +- if(mm == (caddr_t)(-1) || mm == (caddr_t)0) +- return Failed(file); +- +- /* the memcpy is < BUFSIZE to simulate the +- fact that functions like sfreserve/sfgetr do +- not do buffer copying. +- */ +- t = (char*)mm; +- for(k = 0; k < MAPSIZE; k += BUFSIZE, t += BUFSIZE) +- memcpy(buf,t,(3*BUFSIZE)/4); +- } +- close(fd); +- } +- times(&etm); +- mmtm = (etm.tms_utime-stm.tms_utime) + (etm.tms_stime-stm.tms_stime); +- +- remove(file); +- +- if(4*mmtm <= 3*rdtm) +- printf("#define _mmap_worthy 2 /* mmap outperforms read on 64Ki buffers -- use it */\n"); +- else if(4*mmtm <= 5*rdtm) +- printf("#define _mmap_worthy 2 /* mmap is slightly better than read on 64Ki buffers -- use it */\n"); +- else +- printf("#define _mmap_worthy 2 /* mmap worse than read on 64Ki buffers -- use it anyway */\n"); +- +- return 0; +- } +-}end +- + cat{ ++ /* assume MAP_ANON works */ ++ #define _mmap_anon 1 + + /* some systems get it wrong but escape concise detection */ +- #ifndef _NO_MMAP + #if __CYGWIN__ + #define _NO_MMAP 1 + #endif +- #endif + + #if _NO_MMAP + #undef _lib_mmap + #undef _lib_mmap64 +- #undef _mmap_anon +- #undef _mmap_devzero +- #undef _mmap_worthy ++ #undef _mmap_anon + #endif + }end |