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| author | Ludovic Courtès <ludo@gnu.org> | 2015-05-06 23:22:04 +0200 |
|---|---|---|
| committer | Ludovic Courtès <ludo@gnu.org> | 2015-05-06 23:22:04 +0200 |
| commit | c69944c511b89d3fdbffe00353e27d1e1c5f670c (patch) | |
| tree | f260f7f5c856615ffedbc5a610cf834aba3b5b91 /nix/libutil/serialise.cc | |
| parent | a1dd396cc02922372314c35c8035a38bfeea08df (diff) | |
| parent | 8e9140cfdef9dbd1eb61e4c75c91d452ab5e4a74 (diff) | |
| download | guix-c69944c511b89d3fdbffe00353e27d1e1c5f670c.tar.gz | |
Merge commit '8e9140cfdef9dbd1eb61e4c75c91d452ab5e4a74' into nix
Conflicts: Makefile.config.in configure.ac dev-shell doc/manual/builtins.xml doc/manual/conf-file.xml doc/manual/local.mk doc/manual/nix-instantiate.xml doc/manual/nix-store.xml doc/manual/writing-nix-expressions.xml misc/emacs/nix-mode.el perl/lib/Nix/CopyClosure.pm release.nix scripts/nix-build.in scripts/nix-copy-closure.in src/download-via-ssh/download-via-ssh.cc src/libexpr/common-opts.cc src/libexpr/common-opts.hh src/libexpr/eval.cc src/libexpr/eval.hh src/libexpr/local.mk src/libexpr/nixexpr.cc src/libexpr/nixexpr.hh src/libexpr/parser.y src/libexpr/primops.cc src/libexpr/symbol-table.hh src/libmain/shared.cc src/libstore/local.mk src/nix-env/nix-env.cc src/nix-instantiate/nix-instantiate.cc src/nix-store/local.mk src/nix-store/nix-store.cc src/nix-store/serve-protocol.hh tests/lang.sh tests/lang/eval-okay-context.nix tests/lang/eval-okay-search-path.exp tests/lang/eval-okay-search-path.nix tests/local.mk tests/nix-copy-closure.nix
Diffstat (limited to 'nix/libutil/serialise.cc')
| -rw-r--r-- | nix/libutil/serialise.cc | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/nix/libutil/serialise.cc b/nix/libutil/serialise.cc index 6b71f52c15..9241750750 100644 --- a/nix/libutil/serialise.cc +++ b/nix/libutil/serialise.cc @@ -54,8 +54,24 @@ FdSink::~FdSink() } +size_t threshold = 256 * 1024 * 1024; + +static void warnLargeDump() +{ + printMsg(lvlError, "warning: dumping very large path (> 256 MiB); this may run out of memory"); +} + + void FdSink::write(const unsigned char * data, size_t len) { + static bool warned = false; + if (warn && !warned) { + written += len; + if (written > threshold) { + warnLargeDump(); + warned = true; + } + } writeFull(fd, data, len); } @@ -256,4 +272,15 @@ template Paths readStrings(Source & source); template PathSet readStrings(Source & source); +void StringSink::operator () (const unsigned char * data, size_t len) +{ + static bool warned = false; + if (!warned && s.size() > threshold) { + warnLargeDump(); + warned = true; + } + s.append((const char *) data, len); +} + + } |