diff options
Diffstat (limited to 'build2/context.hxx')
| -rw-r--r-- | build2/context.hxx | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/build2/context.hxx b/build2/context.hxx index 5815f51..434b41f 100644 --- a/build2/context.hxx +++ b/build2/context.hxx @@ -41,13 +41,14 @@ namespace build2 // // Serial load can perform arbitrary changes to the model. Exclusive load, // however, can only perform "island appends". That is, it can create new - // "nodes" (variables, scopes, etc) but not change already existing nodes or - // invalidate any references to such (the idea here is that one should be - // able to load additional buildfiles as long as they don't interfere with - // the existing build state). The "islands" are identified by the - // load_generation number (0 for initial/serial load). It is incremented in - // case of a phase switch and is stored in various "nodes" (variables, etc) - // to allow modifications "within the islands". + // "nodes" (variables, scopes, etc) but not (semantically) change already + // existing nodes or invalidate any references to such (the idea here is + // that one should be able to load additional buildfiles as long as they + // don't interfere with the existing build state). The "islands" are + // identified by the load_generation number (0 for the initial/serial + // load). It is incremented in case of a phase switch and can be stored in + // various "nodes" to verify modifications are only done "within the + // islands". // extern run_phase phase; extern size_t load_generation; |