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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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8
src/libmain/shared.hh
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@ -19,8 +19,6 @@ public:
Exit(int status) : status(status) { }
};
class StoreAPI;
int handleExceptions(const string & programName, std::function<void()> fun);
void initNix();
@ -33,9 +31,11 @@ void printVersion(const string & programName);
/* Ugh. No better place to put this. */
void printGCWarning();
void printMissing(StoreAPI & store, const PathSet & paths);
class StoreAPI;
void printMissing(StoreAPI & store, const PathSet & willBuild,
void printMissing(ref<StoreAPI> store, const PathSet & paths);
void printMissing(ref<StoreAPI> store, const PathSet & willBuild,
const PathSet & willSubstitute, const PathSet & unknown,
unsigned long long downloadSize, unsigned long long narSize);