◐ Shell
clean mode source ↗

std::basic_stacktrace<Allocator>::current - cppreference.com

From cppreference.com

static basic_stacktrace current( const allocator_type& alloc =
                                     allocator_type() ) noexcept;
(1) (since C++23) 
static basic_stacktrace current( size_type skip, const allocator_type& alloc =
                                     allocator_type() ) noexcept;
(2) (since C++23) 
static basic_stacktrace current( size_type skip, size_type max_depth,
                                 const allocator_type& alloc =
                                     allocator_type() ) noexcept;
(3) (since C++23)

Let s[i] (0 ≤ i < n) denote the (i+1)-th stacktrace entry in the stacktrace of the current evaluation in the current thread of execution, where n is the count of the stacktrace entries in the stackentry.

1) Attempts to create a basic_stacktrace consisting of s[0], s[1], ..., s[n - 1].

2) Attempts to create a basic_stacktrace consisting of s[m], s[m + 1], ..., s[n - 1], where m is min(skip, n).

3) Attempts to create a basic_stacktrace consisting of s[m], s[m + 1], ..., s[o - 1], where m is min(skip, n) and o is min(skip + max_depth, n).

If ship < skip + max_depth is false (i.e. the mathematical result of skip + max_depth overflows), the behavior is undefined.

(until C++26)

If ship < skip + max_depth is false (i.e. the mathematical result of skip + max_depth overflows):

(since C++26)

In all cases, alloc is stored into the created basic_stacktrace and used to allocate the storage for stacktrace entries.

Parameters

alloc - allocator to use for all memory allocations of the constructed basic_stacktrace
skip - the number of stacktrace entries to skip
max_depth - the maximum depth of the stacktrace entries

Return value

If the allocation succeeds, the basic_stacktrace described above.

Otherwise, an empty basic_stacktrace.

Example

See also

creates a new basic_stacktrace
(public member function) [edit]
constructs a new source_location corresponding to the location of the call site
(public static member function of std::source_location) [edit]