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xo-alloc: retire redline-memory feature

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This commit is contained in:
Roland Conybeare 2025-08-06 22:50:29 -05:00
commit 8b622e6999
8 changed files with 106 additions and 10 deletions
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39
src/alloc/ArenaAlloc.cpp
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@ -12,20 +12,37 @@
namespace xo {
namespace gc {
ArenaAlloc::ArenaAlloc(const std::string & name, std::size_t rz, std::size_t z, bool debug_flag)
ArenaAlloc::ArenaAlloc(const std::string & name,
#ifdef REDLINE_MEMORY
std::size_t rz,
#endif
std::size_t z, bool debug_flag)
{
this->name_ = name;
#ifdef REDLINE_MEMORY
this->lo_ = (new std::byte [rz + z]);
#else
this->lo_ = (new std::byte [z]);
#endif
this->checkpoint_ = lo_;
this->free_ptr_ = lo_;
this->limit_ = lo_ + z;
#ifdef REDLINE_MEMORY
this->redline_z_ = rz;
this->hi_ = limit_ + rz;
#else
this->hi_ = limit_;
#endif
this->debug_flag_ = debug_flag;
if (!lo_) {
#ifdef REDLINE_MEMORY
throw std::runtime_error(tostr("ArenaAlloc: allocation failed",
xtag("size", rz + z)));
#else
throw std::runtime_error(tostr("ArenaAlloc: allocation failed",
xtag("size", z)));
#endif
}
}
@ -39,15 +56,25 @@ namespace xo {
this->checkpoint_ = nullptr;
this->free_ptr_ = nullptr;
this->limit_ = nullptr;
#ifdef REDLINE_MEMORY
this->redline_z_ = 0;
#endif
this->hi_ = nullptr;
this->debug_flag_ = false;
}
up<ArenaAlloc>
ArenaAlloc::make(const std::string & name, std::size_t rz, std::size_t z, bool debug_flag)
ArenaAlloc::make(const std::string & name,
#ifdef REDLINE_MEMORY
std::size_t rz,
#endif
std::size_t z, bool debug_flag)
{
return up<ArenaAlloc>(new ArenaAlloc(name, rz, z, debug_flag));
return up<ArenaAlloc>(new ArenaAlloc(name,
#ifdef REDLINE_MEMORY
rz,
#endif
z, debug_flag));
}
void
@ -144,7 +171,11 @@ namespace xo {
ArenaAlloc::clear()
{
this->set_free_ptr(lo_);
#ifdef REDLINE_MEMORY
this->limit_ = hi_ - redline_z_;
#else
this->limit_ = hi_;
#endif
}
void
@ -184,10 +215,12 @@ namespace xo {
return retval;
}
#ifdef REDLINE_MEMORY
void
ArenaAlloc::release_redline_memory() {
this->limit_ = this->hi_;
}
#endif
} /*namespace gc*/
} /*namespace xo*/