From: Tay Ray Chuan Date: Thu, 7 Jul 2011 04:23:56 +0000 (+0800) Subject: xdiff/xprepare: refactor abort cleanups X-Git-Tag: v1.7.7-rc0~25^2~10 X-Git-Url: https://git.tokkee.org/?a=commitdiff_plain;h=159607a8f1ad16c0a04e0f17d5f8a35299696bc6;p=git.git xdiff/xprepare: refactor abort cleanups Group free()'s that are called when a malloc() fails in xdl_prepare_ctx(), making for more readable code. Also add a free() on ha, in case future git hackers add allocs after the ha malloc. Signed-off-by: Tay Ray Chuan Signed-off-by: Junio C Hamano --- diff --git a/xdiff/xprepare.c b/xdiff/xprepare.c index 783631a34..0f571db2d 100644 --- a/xdiff/xprepare.c +++ b/xdiff/xprepare.c @@ -143,24 +143,21 @@ static int xdl_prepare_ctx(mmfile_t *mf, long narec, xpparam_t const *xpp, char *rchg; long *rindex; - if (xdl_cha_init(&xdf->rcha, sizeof(xrecord_t), narec / 4 + 1) < 0) { + ha = NULL; + rindex = NULL; + rchg = NULL; + rhash = NULL; + recs = NULL; - return -1; - } - if (!(recs = (xrecord_t **) xdl_malloc(narec * sizeof(xrecord_t *)))) { - - xdl_cha_free(&xdf->rcha); - return -1; - } + if (xdl_cha_init(&xdf->rcha, sizeof(xrecord_t), narec / 4 + 1) < 0) + goto abort; + if (!(recs = (xrecord_t **) xdl_malloc(narec * sizeof(xrecord_t *)))) + goto abort; hbits = xdl_hashbits((unsigned int) narec); hsize = 1 << hbits; - if (!(rhash = (xrecord_t **) xdl_malloc(hsize * sizeof(xrecord_t *)))) { - - xdl_free(recs); - xdl_cha_free(&xdf->rcha); - return -1; - } + if (!(rhash = (xrecord_t **) xdl_malloc(hsize * sizeof(xrecord_t *)))) + goto abort; memset(rhash, 0, hsize * sizeof(xrecord_t *)); nrec = 0; @@ -175,63 +172,30 @@ static int xdl_prepare_ctx(mmfile_t *mf, long narec, xpparam_t const *xpp, hav = xdl_hash_record(&cur, top, xpp->flags); if (nrec >= narec) { narec *= 2; - if (!(rrecs = (xrecord_t **) xdl_realloc(recs, narec * sizeof(xrecord_t *)))) { - - xdl_free(rhash); - xdl_free(recs); - xdl_cha_free(&xdf->rcha); - return -1; - } + if (!(rrecs = (xrecord_t **) xdl_realloc(recs, narec * sizeof(xrecord_t *)))) + goto abort; recs = rrecs; } - if (!(crec = xdl_cha_alloc(&xdf->rcha))) { - - xdl_free(rhash); - xdl_free(recs); - xdl_cha_free(&xdf->rcha); - return -1; - } + if (!(crec = xdl_cha_alloc(&xdf->rcha))) + goto abort; crec->ptr = prev; crec->size = (long) (cur - prev); crec->ha = hav; recs[nrec++] = crec; - if (xdl_classify_record(cf, rhash, hbits, crec) < 0) { - - xdl_free(rhash); - xdl_free(recs); - xdl_cha_free(&xdf->rcha); - return -1; - } + if (xdl_classify_record(cf, rhash, hbits, crec) < 0) + goto abort; } } - if (!(rchg = (char *) xdl_malloc((nrec + 2) * sizeof(char)))) { - - xdl_free(rhash); - xdl_free(recs); - xdl_cha_free(&xdf->rcha); - return -1; - } + if (!(rchg = (char *) xdl_malloc((nrec + 2) * sizeof(char)))) + goto abort; memset(rchg, 0, (nrec + 2) * sizeof(char)); - if (!(rindex = (long *) xdl_malloc((nrec + 1) * sizeof(long)))) { - - xdl_free(rchg); - xdl_free(rhash); - xdl_free(recs); - xdl_cha_free(&xdf->rcha); - return -1; - } - if (!(ha = (unsigned long *) xdl_malloc((nrec + 1) * sizeof(unsigned long)))) { - - xdl_free(rindex); - xdl_free(rchg); - xdl_free(rhash); - xdl_free(recs); - xdl_cha_free(&xdf->rcha); - return -1; - } + if (!(rindex = (long *) xdl_malloc((nrec + 1) * sizeof(long)))) + goto abort; + if (!(ha = (unsigned long *) xdl_malloc((nrec + 1) * sizeof(unsigned long)))) + goto abort; xdf->nrec = nrec; xdf->recs = recs; @@ -245,6 +209,15 @@ static int xdl_prepare_ctx(mmfile_t *mf, long narec, xpparam_t const *xpp, xdf->dend = nrec - 1; return 0; + +abort: + xdl_free(ha); + xdl_free(rindex); + xdl_free(rchg); + xdl_free(rhash); + xdl_free(recs); + xdl_cha_free(&xdf->rcha); + return -1; }