| Message ID | 20230110222003.1591436-5-irogers@google.com (mailing list archive) |
|---|---|
| State | Not Applicable |
| Delegated to: | BPF |
| Headers | show |
| Series | Add and use run_command_strbuf | expand |
| Context | Check | Description |
|---|---|---|
| netdev/tree_selection | success | Not a local patch |
| bpf/vmtest-bpf-next-PR | success | PR summary |
| bpf/vmtest-bpf-next-VM_Test-1 | success | Logs for ${{ matrix.test }} on ${{ matrix.arch }} with ${{ matrix.toolchain }} |
| bpf/vmtest-bpf-next-VM_Test-2 | success | Logs for ShellCheck |
| bpf/vmtest-bpf-next-VM_Test-3 | fail | Logs for build for aarch64 with gcc |
| bpf/vmtest-bpf-next-VM_Test-4 | fail | Logs for build for aarch64 with llvm-16 |
| bpf/vmtest-bpf-next-VM_Test-5 | fail | Logs for build for s390x with gcc |
| bpf/vmtest-bpf-next-VM_Test-6 | fail | Logs for build for x86_64 with gcc |
| bpf/vmtest-bpf-next-VM_Test-7 | fail | Logs for build for x86_64 with llvm-16 |
| bpf/vmtest-bpf-next-VM_Test-8 | success | Logs for llvm-toolchain |
| bpf/vmtest-bpf-next-VM_Test-9 | success | Logs for set-matrix |
diff --git a/tools/lib/api/strbuf.c b/tools/lib/api/strbuf.c index 4639b2d02e62..eafa2c01f46a 100644 --- a/tools/lib/api/strbuf.c +++ b/tools/lib/api/strbuf.c @@ -143,25 +143,28 @@ ssize_t strbuf_read(struct strbuf *sb, int fd, ssize_t hint) size_t oldalloc = sb->alloc; int ret; - ret = strbuf_grow(sb, hint ? hint : 8192); + ret = strbuf_grow(sb, hint ? hint : 4095); if (ret) return ret; for (;;) { - ssize_t cnt; + ssize_t read_size; + size_t sb_remaining = sb->alloc - sb->len - 1; - cnt = read(fd, sb->buf + sb->len, sb->alloc - sb->len - 1); - if (cnt < 0) { + read_size = read(fd, sb->buf + sb->len, sb_remaining); + if (read_size < 0) { if (oldalloc == 0) strbuf_release(sb); else strbuf_setlen(sb, oldlen); - return cnt; + return read_size; } - if (!cnt) + if (read_size == 0) break; - sb->len += cnt; - ret = strbuf_grow(sb, 8192); + sb->len += read_size; + if ((size_t)read_size < sb_remaining) + continue; + ret = strbuf_grow(sb, 4095); if (ret) return ret; }
If a read is smaller than the remaining space, don't grow the buffer as it is likely we've reached the end of the file. Make the grow amounts a single page rather than just over 2 once the null terminator is included. Signed-off-by: Ian Rogers <irogers@google.com> --- tools/lib/api/strbuf.c | 19 +++++++++++-------- 1 file changed, 11 insertions(+), 8 deletions(-)