Skip to content

[lldb] Make ReadCStringFromMemory default to read from the file-cache. #3857

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
wants to merge 2 commits into
base: swift/release/5.6
Choose a base branch
from
Open

[lldb] Make ReadCStringFromMemory default to read from the file-cache. #3857

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
efaffb6
[lldb] Make ReadCStringFromMemory default to read from the file-cache.
augusto2112 Jan 26, 2022
3e076b7
[lldb] Force live memory as the default in ReadCStringFromMemory
augusto2112 Feb 1, 2022
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
5 changes: 3 additions & 2 deletions lldb/include/lldb/Target/Target.h
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -1067,10 +1067,11 @@ class Target : public std::enable_shared_from_this<Target>,
lldb::addr_t *load_addr_ptr = nullptr);

size_t ReadCStringFromMemory(const Address &addr, std::string &out_str,
Status &error);
Status &error, bool force_live_memory = true);

size_t ReadCStringFromMemory(const Address &addr, char *dst,
size_t dst_max_len, Status &result_error);
size_t dst_max_len, Status &result_error,
bool force_live_memory = true);

size_t ReadScalarIntegerFromMemory(const Address &addr, uint32_t byte_size,
bool is_signed, Scalar &scalar,
Expand Down
12 changes: 7 additions & 5 deletions lldb/source/Target/Target.cpp
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -1883,13 +1883,14 @@ size_t Target::ReadMemory(const Address &addr, void *dst, size_t dst_len,
}

size_t Target::ReadCStringFromMemory(const Address &addr, std::string &out_str,
Status &error) {
Status &error, bool force_live_memory) {
char buf[256];
out_str.clear();
addr_t curr_addr = addr.GetLoadAddress(this);
Address address(addr);
while (true) {
size_t length = ReadCStringFromMemory(address, buf, sizeof(buf), error);
size_t length = ReadCStringFromMemory(address, buf, sizeof(buf), error,
force_live_memory);
if (length == 0)
break;
out_str.append(buf, length);
Expand All @@ -1905,7 +1906,8 @@ size_t Target::ReadCStringFromMemory(const Address &addr, std::string &out_str,
}

size_t Target::ReadCStringFromMemory(const Address &addr, char *dst,
size_t dst_max_len, Status &result_error) {
size_t dst_max_len, Status &result_error,
bool force_live_memory) {
size_t total_cstr_len = 0;
if (dst && dst_max_len) {
result_error.Clear();
Expand All @@ -1928,8 +1930,8 @@ size_t Target::ReadCStringFromMemory(const Address &addr, char *dst,
cache_line_size - (curr_addr % cache_line_size);
addr_t bytes_to_read =
std::min<addr_t>(bytes_left, cache_line_bytes_left);
size_t bytes_read =
ReadMemory(address, curr_dst, bytes_to_read, error, true);
size_t bytes_read = ReadMemory(address, curr_dst, bytes_to_read, error,
force_live_memory);

if (bytes_read == 0) {
result_error = error;
Expand Down