diff options
Diffstat (limited to 'src/strings.c')
| -rw-r--r-- | src/strings.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/src/strings.c b/src/strings.c index b2bce7b4..fe0ab6ce 100644 --- a/src/strings.c +++ b/src/strings.c @@ -43,6 +43,10 @@ #include <system.h> +#ifndef MAP_POPULATE +# define MAP_POPULATE 0 +#endif + /* Prototypes of local functions. */ static int read_fd (int fd, const char *fname, off64_t fdlen); @@ -489,8 +493,13 @@ map_file (int fd, off64_t start_off, off64_t fdlen, size_t *map_sizep) fd, start_off); if (mem != MAP_FAILED) { +#if !defined POSIX_MADV_SEQUENTIAL && defined MADV_SEQUENTIAL +# define POSIX_MADV_SEQUENTIAL MADV_SEQUENTIAL +#endif +#ifdef POSIX_MADV_SEQUENTIAL /* We will go through the mapping sequentially. */ (void) posix_madvise (mem, map_size, POSIX_MADV_SEQUENTIAL); +#endif break; } if (errno != EINVAL && errno != ENOMEM) @@ -581,9 +590,11 @@ read_block (int fd, const char *fname, off64_t fdlen, off64_t from, off64_t to) elfmap_off = from & ~(ps - 1); elfmap_base = elfmap = map_file (fd, elfmap_off, fdlen, &elfmap_size); +#ifdef POSIX_FADV_SEQUENTIAL if (unlikely (elfmap == MAP_FAILED)) /* Let the kernel know we are going to read everything in sequence. */ (void) posix_fadvise (fd, 0, 0, POSIX_FADV_SEQUENTIAL); +#endif } if (unlikely (elfmap == MAP_FAILED)) |