diff options
| -rw-r--r-- | gmon/gmon.c | 52 |
1 files changed, 38 insertions, 14 deletions
diff --git a/gmon/gmon.c b/gmon/gmon.c index e00b339367..7307b0501a 100644 --- a/gmon/gmon.c +++ b/gmon/gmon.c @@ -195,16 +195,23 @@ write_call_graph (fd) int fd; { u_char tag = GMON_TAG_CG_ARC; - struct gmon_cg_arc_record raw_arc + struct gmon_cg_arc_record raw_arc[4] __attribute__ ((aligned (__alignof__ (char*)))); int from_index, to_index, from_len; u_long frompc; - struct iovec iov[2] = + struct iovec iov[8] = { { &tag, sizeof (tag) }, - { &raw_arc, sizeof (struct gmon_cg_arc_record) } + { &raw_arc[0], sizeof (struct gmon_cg_arc_record) }, + { &tag, sizeof (tag) }, + { &raw_arc[1], sizeof (struct gmon_cg_arc_record) }, + { &tag, sizeof (tag) }, + { &raw_arc[2], sizeof (struct gmon_cg_arc_record) }, + { &tag, sizeof (tag) }, + { &raw_arc[3], sizeof (struct gmon_cg_arc_record) }, }; + int nfilled = 0; from_len = _gmonparam.fromssize / sizeof (*_gmonparam.froms); for (from_index = 0; from_index < from_len; ++from_index) @@ -219,13 +226,19 @@ write_call_graph (fd) to_index != 0; to_index = _gmonparam.tos[to_index].link) { - *(char **) raw_arc.from_pc = (char *)frompc; - *(char **) raw_arc.self_pc = (char *)_gmonparam.tos[to_index].selfpc; - *(int *) raw_arc.count = _gmonparam.tos[to_index].count; - - __writev (fd, iov, 2); + if (nfilled > 3) + { + __writev (fd, iov, 2 * nfilled); + nfilled = 0; + } + *(char **) raw_arc[nfilled].from_pc = (char *)frompc; + *(char **) raw_arc[nfilled].self_pc = + (char *)_gmonparam.tos[to_index].selfpc; + *(int *) raw_arc[nfilled].count = _gmonparam.tos[to_index].count; + ++nfilled; } } + __writev (fd, iov, 2 * nfilled); } @@ -243,25 +256,36 @@ write_bb_counts (fd) { &tag, sizeof (tag) }, { &ncounts, sizeof (ncounts) } }; - struct iovec bbbody[2]; + struct iovec bbbody[8]; + int nfilled; - bbbody[0].iov_len = sizeof (grp->addresses[0]); - bbbody[1].iov_len = sizeof (grp->addresses[0]); + for (i = 0; i < (sizeof (bbbody) / sizeof (bbbody[0])); i += 2) + { + bbbody[i].iov_len = sizeof (grp->addresses[0]); + bbbody[i + 1].iov_len = sizeof (grp->counts[0]); + } /* Write each group of basic-block info (all basic-blocks in a compilation unit form a single group). */ + nfilled = 0; for (grp = __bb_head; grp; grp = grp->next) { ncounts = grp->ncounts; __writev (fd, bbhead, 2); for (i = 0; i < ncounts; ++i) { - bbbody[0].iov_base = (char *) &grp->addresses[i]; - bbbody[1].iov_base = &grp->counts[i]; - __writev (fd, bbbody, 2); + if (nfilled > (sizeof (bbbody) / sizeof (bbbody[0])) - 2) + { + __writev (fd, bbbody, nfilled); + nfilled = 0; + } + + bbbody[nfilled++].iov_base = (char *) &grp->addresses[i]; + bbbody[nfilled++].iov_base = &grp->counts[i]; } } + __writev (fd, bbbody, nfilled); } |