diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/alloc/alloc_mmap/mmap_mem.cpp | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/src/alloc/alloc_mmap/mmap_mem.cpp b/src/alloc/alloc_mmap/mmap_mem.cpp index 78177bcdd..e4b602764 100644 --- a/src/alloc/alloc_mmap/mmap_mem.cpp +++ b/src/alloc/alloc_mmap/mmap_mem.cpp @@ -85,20 +85,22 @@ void* MemoryMapping_Allocator::alloc_block(size_t n) if(file.get_fd() == -1) throw MemoryMapping_Failed("Could not create file"); - std::vector<byte> zeros(n); + std::vector<byte> zeros(4096); - ssize_t remaining = n; + size_t remaining = n; while(remaining) { - ssize_t wrote_here = ::write(file.get_fd(), - &zeros[0], - remaining); + const size_t write_try = std::min(zeros.size(), remaining); - if(wrote_here == -1 && errno != EINTR) + ssize_t wrote_got = ::write(file.get_fd(), + &zeros[0], + write_try); + + if(wrote_got == -1 && errno != EINTR) throw MemoryMapping_Failed("Could not write to file"); - remaining -= wrote_here; + remaining -= wrote_got; } #ifndef MAP_NOSYNC |