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Eliminate the "store" global variable

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Also, move a few free-standing functions into StoreAPI and Derivation.

Also, introduce a non-nullable smart pointer, ref<T>, which is just a
wrapper around std::shared_ptr ensuring that the pointer is never
null. (For reference-counted values, this is better than passing a
"T&", because the latter doesn't maintain the refcount. Usually, the
caller will have a shared_ptr keeping the value alive, but that's not
always the case, e.g., when passing a reference to a std::thread via
std::bind.)
This commit is contained in:
Eelco Dolstra 2016-02-04 14:28:26 +01:00
parent 4f7824c58e
commit c10c61449f
36 changed files with 511 additions and 458 deletions
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4
src/libstore/profiles.cc
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@ -74,7 +74,7 @@ static void makeName(const Path & profile, unsigned int num,
}
Path createGeneration(Path profile, Path outPath)
Path createGeneration(ref<StoreAPI> store, Path profile, Path outPath)
{
/* The new generation number should be higher than old the
previous ones. */
@ -108,7 +108,7 @@ Path createGeneration(Path profile, Path outPath)
user environment etc. we've just built. */
Path generation;
makeName(profile, num + 1, generation);
addPermRoot(*store, outPath, generation, false, true);
addPermRoot(store, outPath, generation, false, true);
return generation;
}