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map1/2 for stack usage

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This commit is contained in:
Ben Burdette 2021-05-11 15:38:49 -06:00
parent a8fef9a6b1
commit e7847ad7a1
2 changed files with 27 additions and 31 deletions
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2
Makefile
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@ -31,4 +31,4 @@ endif
include mk/lib.mk
GLOBAL_CXXFLAGS += -g -Wall -include config.h -std=c++17
GLOBAL_CXXFLAGS += -g -Wall -include config.h -std=c++17 -fstack-usage

56
src/libexpr/eval.cc
View file

@ -17,7 +17,6 @@
#include <sys/resource.h>
#include <iostream>
#include <fstream>
#include <optional>
#include <sys/resource.h>
@ -617,6 +616,19 @@ std::optional<EvalState::Doc> EvalState::getDoc(Value & v)
return {};
}
static std::optional<const std::map<std::string, Value *>> map1(const char *name, Value *v) __attribute__((noinline));
std::optional<const std::map<std::string, Value *>> map1(const char *name, Value *v)
{
return std::optional<const std::map<std::string, Value *>>({{name, v}});
}
static std::optional<const std::map<std::string, Value *>> map2(const char *name1, Value *v1, const char *name2, Value *v2) __attribute__((noinline));
std::optional<const std::map<std::string, Value *>> map2(const char *name1, Value *v1, const char *name2, Value *v2)
{
return std::optional<const std::map<std::string, Value *>>({{name1, v1},{name2, v2}});
}
/* Every "format" object (even temporary) takes up a few hundred bytes
of stack space, which is a real killer in the recursive
evaluator. So here are some helper functions for throwing
@ -657,8 +669,6 @@ LocalNoInlineNoReturn(void throwEvalError(const Pos & p1, const char * s, const
});
}
// #define valmap(x) std::optional<const std::map<std::string, Value *>>
LocalNoInlineNoReturn(void throwTypeError(const Pos & pos, const char * s, const std::optional<const std::map<std::string, Value *>> & env))
{
auto error = TypeError({
@ -1308,7 +1318,7 @@ void EvalState::callFunction(Value & fun, Value & arg, Value & v, const Pos & po
pos,
"attempt to call something which is not a function but %1%",
fun,
std::optional<const std::map<std::string, Value *>>({{"fun", &fun}, {"arg", &arg}}));
map2("fun", &fun, "arg", &arg));
// auto error = TypeError({
// // .hint = hintfmt("attempt to call something which is not a function but %1%", showType(fun)),
@ -1352,7 +1362,7 @@ void EvalState::callFunction(Value & fun, Value & arg, Value & v, const Pos & po
"%1% called without required argument '%2%'",
lambda,
i.name,
std::optional<const std::map<std::string, Value *>>({{"fun", &fun}, {"arg", &arg}}));
map2("fun", &fun, "arg", &arg));
env2.values[displ++] = i.def->maybeThunk(*this, env2);
} else {
attrsUsed++;
@ -1371,7 +1381,7 @@ void EvalState::callFunction(Value & fun, Value & arg, Value & v, const Pos & po
"%1% called with unexpected argument '%2%'",
lambda,
i.name,
std::optional<const std::map<std::string, Value *>>({{"fun", &fun}, {"arg", &arg}}));
map2("fun", &fun, "arg", &arg));
abort(); // can't happen
}
}
@ -1446,23 +1456,9 @@ void EvalState::autoCallFunction(Bindings & args, Value & fun, Value & res)
Nix attempted to evaluate a function as a top level expression; in
this case it must have its arguments supplied either by default
values, or passed explicitly with '--arg' or '--argstr'. See
https://nixos.org/manual/nix/stable/#ss-functions.)", i.name,
std::optional<const std::map<std::string, Value *>>({{"fun", &fun}})); // todo add bindings.
// throwMissingArgumentError(i.pos
// , R"(cannot evaluate a function that has an argument without a value ('%1%')
// Nix attempted to evaluate a function as a top level expression; in
// this case it must have its arguments supplied either by default
// values, or passed explicitly with '--arg' or '--argstr'. See
// https://nixos.org/manual/nix/stable/#ss-functions.)", i.name);
// if (debuggerHook)
// // debuggerHook(error, args);
// debuggerHook(error, {{"fun", &fun}});
// throw error;
https://nixos.org/manual/nix/stable/#ss-functions.)",
i.name,
map1("fun", &fun)); // todo add bindings.
}
}
}
@ -1716,7 +1712,7 @@ NixInt EvalState::forceInt(Value & v, const Pos & pos)
forceValue(v, pos);
if (v.type() != nInt)
throwTypeError(pos, "value is %1% while an integer was expected", v,
std::optional<const std::map<std::string, Value *>>({{"value", &v}}));
map1("value", &v));
return v.integer;
}
@ -1728,7 +1724,7 @@ NixFloat EvalState::forceFloat(Value & v, const Pos & pos)
return v.integer;
else if (v.type() != nFloat)
throwTypeError(pos, "value is %1% while a float was expected", v,
std::optional<const std::map<std::string, Value *>>({{"value", &v}}));
map1("value", &v));
return v.fpoint;
}
@ -1738,7 +1734,7 @@ bool EvalState::forceBool(Value & v, const Pos & pos)
forceValue(v, pos);
if (v.type() != nBool)
throwTypeError(pos, "value is %1% while a Boolean was expected", v,
std::optional<const std::map<std::string, Value *>>({{"value", &v}}));
map1("value", &v));
return v.boolean;
}
@ -1754,7 +1750,7 @@ void EvalState::forceFunction(Value & v, const Pos & pos)
forceValue(v, pos);
if (v.type() != nFunction && !isFunctor(v))
throwTypeError(pos, "value is %1% while a function was expected", v,
std::optional<const std::map<std::string, Value *>>({{"value", &v}}));
map1("value", &v));
}
@ -1763,7 +1759,7 @@ string EvalState::forceString(Value & v, const Pos & pos)
forceValue(v, pos);
if (v.type() != nString) {
throwTypeError(pos, "value is %1% while a string was expected", v,
std::optional<const std::map<std::string, Value *>>({{"value", &v}}));
map1("value", &v));
}
return string(v.string.s);
}
@ -1872,7 +1868,7 @@ string EvalState::coerceToString(const Pos & pos, Value & v, PathSet & context,
auto i = v.attrs->find(sOutPath);
if (i == v.attrs->end())
throwTypeError(pos, "cannot coerce a set to a string",
std::optional<const std::map<std::string, Value *>>({{"value", &v}}));
map1("value", &v));
return coerceToString(pos, *i->value, context, coerceMore, copyToStore);
}
@ -1904,7 +1900,7 @@ string EvalState::coerceToString(const Pos & pos, Value & v, PathSet & context,
}
throwTypeError(pos, "cannot coerce %1% to a string", v,
std::optional<const std::map<std::string, Value *>>({{"value", &v}}));
map1("value", &v));
}