Class: RbBCC::SymbolCache

Inherits:
Object
  • Object
show all
Defined in:
lib/rbbcc/symbol_cache.rb

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(pid) ⇒ SymbolCache

Returns a new instance of SymbolCache.



22
23
24
 
# File 'lib/rbbcc/symbol_cache.rb', line 22

def initialize(pid)
  @cache = Clib.bcc_symcache_new(pid, nil)
end

Class Method Details

.cache(pid) ⇒ Object Also known as: [] 



10
11
12
13
14
 
# File 'lib/rbbcc/symbol_cache.rb', line 10

def cache(pid)
  pid = -1 if pid < 0 && pid != -1
  caches[pid] ||= SymbolCache.new(pid)
  caches[pid]
end

.caches ⇒ Object 



6
7
8
 
# File 'lib/rbbcc/symbol_cache.rb', line 6

def caches
  @caches ||= {}
end

.resolve_global(name) ⇒ Object 



17
18
19
 
# File 'lib/rbbcc/symbol_cache.rb', line 17

def resolve_global(name)
  self[-1].resolve_name(nil, name)
end

Instance Method Details

#resolve(addr, demangle) ⇒ Object 



26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
 
# File 'lib/rbbcc/symbol_cache.rb', line 26

def resolve(addr, demangle)
  sym = Clib::BCCSymbol.malloc
  ret = if demangle
          Clib.bcc_symcache_resolve(@cache, addr, sym)
        else
          Clib.bcc_symcache_resolve_no_demangle(@cache, addr, sym)
        end
  if ret < 0
    return [nil, addr, nil]
  end

  if demangle
    name_res = Clib.__extract_char(sym.demangle_name)
    Clib.bcc_symbol_free_demangle_name(sym)
  else
    name_res = Clib.__extract_char(sym.name)
  end

  return [name_res, sym.offset, Clib.__extract_char(sym.module)]
end

#resolve_name(_module, name) ⇒ Object 



47
48
49
50
51
52
53
 
# File 'lib/rbbcc/symbol_cache.rb', line 47

def resolve_name(_module, name)
  addr_p = Fiddle::Pointer.malloc(Fiddle::SIZEOF_UINTPTR_T)
  if Clib.bcc_symcache_resolve_name(@cache, _module, name, addr_p) < 0
    return false
  end
  return addr_p
end