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| author | Alejandro Colomar <alx@nginx.com> | 2023-08-19 12:43:39 +0200 |
|---|---|---|
| committer | Alejandro Colomar <alx@kernel.org> | 2023-10-25 13:37:31 +0200 |
| commit | a084e2bc8066ce2fed852bf04e5168e289bf834b (patch) | |
| tree | 72cc4a025ae508b2461b20f8371a186c380600ac /auto/make | |
| parent | fb33ec86a3b6ca6a844dfa6980bb9e083094abec (diff) | |
| download | unit-a084e2bc8066ce2fed852bf04e5168e289bf834b.tar.gz unit-a084e2bc8066ce2fed852bf04e5168e289bf834b.tar.bz2 | |
Libunit: added macros that enhance type safety.
nxt_min()
nxt_max()
Return the minimum/maximum of two values.
nxt_swap()
Swap the values of two variables passed by their addresses.
nxt_sizeof_array()
Return the size (in bytes) of an array.
nxt_nitems()
Return the number of elements in an array.
nxt_memberof()
Expand to a member of a structure. It uses a compound literal for
the object.
nxt_sizeof_incomplete()
Calculate the size of an incomplete type, as if sizeof() could be
applied to it.
nxt_sizeof_fam0()
Calculate the size of each element of a FAM of a structure.
nxt_sizeof_fam()
Calculate the size of a FAM of a structure.
nxt_offsetof_fam()
Calculate the offset of the nth element of the FAM from the start of
the containing structure.
nxt_sizeof_struct()
Calculate the total size of a structure containing a FAM. This
value is the one that should be used for allocating the structure.
Suggested-by: Andrew Clayton <a.clayton@nginx.com>
nxt_is_near_end()
Evaluate to true if the member is near the end of a structure. This
is only designed to be used with FAMs, to make sure that the FAM is
near the end of the structure (a zero-length array near the end of
the structure would still pass this test, but it's a reasonable
assertion to do.
Suggested-by: David Laight <David.Laight@ACULAB.COM>
nxt_is_zero_sizeof()
Evaluate to true if the size of 'x' is 0.
nxt_is_same_type()
Evaluate to true if the both arguments are compatible types.
nxt_is_same_typeof()
Evaluate to true if the types of both arguments are compatible.
nxt_is_array()
Evaluate to true if the argument is an array.
nxt_must_be()
It's like static_assert(3), but implemented as an expression. It's
necessary for writing the must_be_array() macro. It's always
evaluates to (int) 0.
nxt_must_be_array()
Statically assert that the argument is an array. It is an
expression that always evaluates to (int) 0.
nxt_must_be_zero_sizeof()
Statically assert that the argument has a size of 0.
nxt_must_be_near_end()
Statically assert that a member of a structure is near the end of
it.
Suggested-by: David Laight <David.Laight@ACULAB.COM>
nxt_must_be_fam()
Statically assert that the argument is a flexible array member
(FAM). It's an expression that always evaluates to (int) 0.
Link: <https://gustedt.wordpress.com/2011/03/14/flexible-array-member/>
Link: <https://lore.kernel.org/lkml/202308161913.91369D4A@keescook/T/>
Link: <https://inbox.sourceware.org/gcc/dac8afb7-5026-c702-85d2-c3ad977d9a48@kernel.org/T/>
Link: <https://stackoverflow.com/a/57537491>
Link: <https://github.com/shadow-maint/shadow/pull/762>
Cc: Andrew Clayton <a.clayton@nginx.com>
Cc: Zhidao Hong <z.hong@f5.com>
Signed-off-by: Alejandro Colomar <alx@nginx.com>
Signed-off-by: Alejandro Colomar <alx@kernel.org>
Diffstat (limited to 'auto/make')
| -rw-r--r-- | auto/make | 2 |
1 files changed, 2 insertions, 0 deletions
@@ -406,6 +406,7 @@ libunit-install: $NXT_BUILD_DIR/lib/$NXT_LIB_UNIT_STATIC test -d \$(DESTDIR)$NXT_INCLUDEDIR \ || install -d \$(DESTDIR)$NXT_INCLUDEDIR install -p -m u=rw,go=r src/nxt_unit.h \ + src/nxt_unit_cdefs.h \ src/nxt_unit_field.h \ src/nxt_unit_request.h \ src/nxt_unit_response.h \ @@ -423,6 +424,7 @@ libunit-uninstall: rm -f \$(DESTDIR)$NXT_PKGCONFIGDIR/unit.pc @rmdir -p \$(DESTDIR)$NXT_PKGCONFIGDIR 2>/dev/null || true rm -f \$(DESTDIR)$NXT_INCLUDEDIR/nxt_unit.h \ + \$(DESTDIR)$NXT_INCLUDEDIR/nxt_unit_cdefs.h \ \$(DESTDIR)$NXT_INCLUDEDIR/nxt_unit_field.h \ \$(DESTDIR)$NXT_INCLUDEDIR/nxt_unit_request.h \ \$(DESTDIR)$NXT_INCLUDEDIR/nxt_unit_response.h \ |