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Move path info caching from BinaryCacheStore to Store

Browse source 
Caching path info is generally useful. For instance, it speeds up "nix
path-info -rS /run/current-system" (i.e. showing the closure sizes of
all paths in the closure of the current system) from 5.6s to 0.15s.

This also eliminates some APIs like Store::queryDeriver() and
Store::queryReferences().
This commit is contained in:
Eelco Dolstra 2016-04-19 18:50:15 +02:00
parent 608b0265e1
commit e0204f8d46
21 changed files with 318 additions and 353 deletions
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21
perl/lib/Nix/Store.xs
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@ -70,8 +70,7 @@ int isValidPath(char * path)
SV * queryReferences(char * path)
PPCODE:
try {
PathSet paths;
store()->queryReferences(path, paths);
PathSet paths = store()->queryPathInfo(path)->references;
for (PathSet::iterator i = paths.begin(); i != paths.end(); ++i)
XPUSHs(sv_2mortal(newSVpv(i->c_str(), 0)));
} catch (Error & e) {
@ -82,7 +81,7 @@ SV * queryReferences(char * path)
SV * queryPathHash(char * path)
PPCODE:
try {
Hash hash = store()->queryPathHash(path);
auto hash = store()->queryPathInfo(path)->narHash;
string s = "sha256:" + printHash32(hash);
XPUSHs(sv_2mortal(newSVpv(s.c_str(), 0)));
} catch (Error & e) {
@ -93,7 +92,7 @@ SV * queryPathHash(char * path)
SV * queryDeriver(char * path)
PPCODE:
try {
Path deriver = store()->queryDeriver(path);
auto deriver = store()->queryPathInfo(path)->deriver;
if (deriver == "") XSRETURN_UNDEF;
XPUSHs(sv_2mortal(newSVpv(deriver.c_str(), 0)));
} catch (Error & e) {
@ -104,17 +103,17 @@ SV * queryDeriver(char * path)
SV * queryPathInfo(char * path, int base32)
PPCODE:
try {
ValidPathInfo info = store()->queryPathInfo(path);
if (info.deriver == "")
auto info = store()->queryPathInfo(path);
if (info->deriver == "")
XPUSHs(&PL_sv_undef);
else
XPUSHs(sv_2mortal(newSVpv(info.deriver.c_str(), 0)));
string s = "sha256:" + (base32 ? printHash32(info.narHash) : printHash(info.narHash));
XPUSHs(sv_2mortal(newSVpv(info->deriver.c_str(), 0)));
string s = "sha256:" + (base32 ? printHash32(info->narHash) : printHash(info->narHash));
XPUSHs(sv_2mortal(newSVpv(s.c_str(), 0)));
mXPUSHi(info.registrationTime);
mXPUSHi(info.narSize);
mXPUSHi(info->registrationTime);
mXPUSHi(info->narSize);
AV * arr = newAV();
for (PathSet::iterator i = info.references.begin(); i != info.references.end(); ++i)
for (PathSet::iterator i = info->references.begin(); i != info->references.end(); ++i)
av_push(arr, newSVpv(i->c_str(), 0));
XPUSHs(sv_2mortal(newRV((SV *) arr)));
} catch (Error & e) {