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Add an option for Stringpools to not copy strings.

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This commit is contained in:
Ian Lance Taylor
2007-10-12 06:06:34 +00:00
parent 0ffd9845f2
commit cfd73a4e26
9 changed files with 57 additions and 47 deletions
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21
gold/stringpool.h
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@@ -47,8 +47,9 @@ class Output_file;
// string pointer so that repeated runs of the linker will generate
// precisely the same output.
// When you add a string to a Stringpool, Stringpool will make a copy
// of it. Thus there is no need to keep a copy elsewhere.
// When you add a string to a Stringpool, Stringpool will optionally
// make a copy of it. Thus there is no requirement to keep a copy
// elsewhere.
// A Stringpool can be turned into a string table, a sequential series
// of null terminated strings. The first string may optionally be a
@@ -91,19 +92,15 @@ class Stringpool_template
{ this->zero_null_ = false; }
// Add the string S to the pool. This returns a canonical permanent
// pointer to the string in the pool. If PKEY is not NULL, this
// sets *PKEY to the key for the string.
// pointer to the string in the pool. If COPY is true, the string
// is copied into permanent storage. If PKEY is not NULL, this sets
// *PKEY to the key for the string.
const Stringpool_char*
add(const Stringpool_char* s, Key* pkey);
// Add the string S to the pool.
const Stringpool_char*
add(const std::basic_string<Stringpool_char>& s, Key* pkey)
{ return this->add(s.c_str(), pkey); }
add(const Stringpool_char* s, bool copy, Key* pkey);
// Add the prefix of length LEN of string S to the pool.
const Stringpool_char*
add(const Stringpool_char* s, size_t len, Key* pkey);
add_prefix(const Stringpool_char* s, size_t len, Key* pkey);
// If the string S is present in the pool, return the canonical
// string pointer. Otherwise, return NULL. If PKEY is not NULL,
@@ -232,6 +229,8 @@ class Stringpool_template
off_t strtab_size_;
// Next Stringdata index.
unsigned int next_index_;
// Next key value for a string we don't copy.
int next_uncopied_key_;
// Whether to reserve offset 0 to hold the null string.
bool zero_null_;
};