diff options
Diffstat (limited to 'include/llfio/v2.0/detail/impl/posix/utils.ipp')
| -rw-r--r-- | include/llfio/v2.0/detail/impl/posix/utils.ipp | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/include/llfio/v2.0/detail/impl/posix/utils.ipp b/include/llfio/v2.0/detail/impl/posix/utils.ipp index c043ca44..15fe1a5a 100644 --- a/include/llfio/v2.0/detail/impl/posix/utils.ipp +++ b/include/llfio/v2.0/detail/impl/posix/utils.ipp @@ -333,7 +333,7 @@ namespace utils (values are in pages) - /proc/[pid]/smaps_rollup: + /proc/[pid]/smaps_rollup (Linux 3.16 onwards only): total_address_space_in_use = ??? MISSING total_address_space_paged_in = ??? MISSING @@ -363,7 +363,16 @@ namespace utils if(want & process_memory_usage::want::private_committed) { std::vector<char> smaps_rollup(256), maps(65536); - OUTCOME_TRY(fill_buffer(smaps_rollup, "/proc/self/smaps_rollup")); + auto r = fill_buffer(smaps_rollup, "/proc/self/smaps_rollup"); + if(!r) + { + if(r.error() == errc::no_such_file_or_directory) + { + // Linux kernel is too old + return errc::operation_not_supported; + } + return std::move(r).error(); + } OUTCOME_TRY(fill_buffer(maps, "/proc/self/maps")); uint64_t lazyfree = 0; { |